If we want to know the total deposits which is made then:
We begin with Initial balance on July 1: $37,450
Then subtract the cash payments of $115,860
So subtotal = ($78,410)
To arrive at the final balance of : $29,600 there had to be deposits of 78,410 to offset the subtotal + another $29,600, so
total deposits = 78,410 + 29,600 = $108,010