Answer:
$3,932,025.94
Explanation:
Multiplier = 1 / rr
Multiplier = 1 / Reserve ratio
Multiplier = 1 / 0.12
Multiplier = 8.3333
Increase in money supply = Multiplier * Increase in excess reserves
Increase in money supply = 8.3333 * $471,845
Increase in money supply = $3,932,025.94
So, the maximum increase in the money supply is $3,932,025.94.