Answer:
$1541537.05
Step-by-step explanation:
Calculate the money multiplier
= 1/ reserve ratio
reserve ratio = 15% = 0.15
therefore the money multiplier = 1/0.15 = 6.6666 ≈ 6.67
to calculate the maximum increase in money supply would be
money multiplier * excess reserve added
6.67 * $231115 = $1541537.05
since there is an increase in money supply by the central bank and this resulted in an additional $231115 in excess reserve hence the maximum increase in money supply will be $1541537.05