How does Empower round this number?
I haven't been able to recreate that exact number in Empower, thanks.
Best Answers

From Empower help:
Method that Empower software uses to round numbers
Empower software evaluates the digit in the decimal place to the right of the specified precision in the unrounded number.
 If this digit is smaller than 5, that digit and all digits after it are eliminated, and the preceding digit is unchanged.
 If this digit is equal to or greater than 5, that digit is eliminated, and the preceding digit is increased by 1.
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I've tried to pose the white paper before, and the forums don't like it anymore.
I would strongly encourage you both to look at TECN1851937 (http://www.waters.com/waters/download.htm?lid=1851937&id=1851938&fileName=Differences+in+Rounded+Values+in+Empower+Software&fileUrl=%2fwebassets%2fcms%2fsupport%2fdocs%2fdifferences_in_rounded_values_05.pdf)
XX.49999999999999999999999999 (etc, etc) is a very hard number for Empower to represent on account of conversions between Base 2 (oracle) and base 10 (Microsoft).
Pay close attention to example one in the linked document.
The answer given, though certainly correct, is technically not accurate for this unique case you used in your example. Depending upon where you are in this process (review versus processed result) you could potentially be pulling every last hair our of your head trying to figure out why numbers are not rounding "correctly".
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Answers
My guess is that it will come up as 74.
I think a more sensible way to check the limits would be "at quantitation only" because this deals with saved results "Always" may display a value which isn't saved and give a false fault. Thanks again for all the help on this for you and Dan.