To calculate LaToya's current balance, let's start with her initial balance of $113.94. She then withdraws $40 from an ATM, which incurs a usage fee of $2.50. So, we subtract $40 and $2.50 from her balance:
$113.94 - $40 - $2.50 = $71.44
The following week, she deposits her paycheck of $189.73. Adding this deposit to her balance:
$71.44 + $189.73 = $261.17
Next, she writes two checks: one for $22.50 and the other for $70.18. Subtracting these amounts from her balance:
$261.17 - $22.50 - $70.18 = $168.49
Therefore, the current balance in LaToya's checking account is $168.49.