I need help displaying information over a Matrix Table

Hi Everyone, 

I hope to find you all well, I have the following table:

If I leave the measurement be, the balance will do the totals calculation:  

(32-33) * 33 = -33

Which is not correct. So, last time, the problem was that the balance was not calculating correctly, I did some digging and found the solution was to add a SUMX expression to a different calculation, somthing like this: 

Final Measure = SUMX(Table, Original Measure)

I feel I have to give full context so that we are all on the same page, the exercise I'm doing is the calculation of the cost of materials in my plant, so we have last prices every month, I made a calculation so that whenever you chose a date it will always give you the last price. So now we basically have all the pieces of the puzzle, I just need one more things.

I need the final results on a Matrix Table, something like this

Does anyone know how to do this?

Thank you. Best Regards