If you sort ( descending ) the relationship by PriceAdjustment::DateChanged, the calc for Transaction::CurrentPrice will be simply:
That worked great. I wasn't aware of the ability to sort specifically within the relationship graph. That is an excellent way to accomplish that. I was messing around with different script triggers and had no luck that way. This even allows you to sort in on the portal side increasing user function without affecting the Current Price in transaction.
Thanks so much for the assistance. I am starting to realize the power of this program but do not fully understand the inner workings so I have a lot to learn.