Since you filed a joint return for 2017 then the AGI is the same for each of you.  Enter the same amount in each place by your individual names for the 2018 return you are trying to e-file.

Items found in tax transcripts: 

ADJUSTED GROSS INCOME:..............................................$72,456.00
ADJUSTED GROSS INCOME PER COMPUTER:.................................$73,500.00

In this most recent try, I put in the numbers below that represent the proportion of the AGI (not the Per Computer amount) for each of us.  I have tried each of the above numbers for both of us and split up in different ways.  

This is how it looks copied from the TT interface (with some editing to clarify)

ME
$40,734 (2017 adjusted gross income)

My Wife
$31,722.00 (2017 adjusted gross income)

Questions:

Which amount from the federal transcripts and for whom?