Finding the Fourth Proportional to 31,113.92, 42,935.68 and 16,966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,113.92 : 42,935.68 = 16,966.72 : x
2. Step 2: Convert to fraction form
   31,113.92/42,935.68 = 16,966.72/x
3. Step 3: Cross multiply
   31,113.92x = 42,935.68 × 16,966.72
4. Step 4: Simplify right side
   31,113.92x = 728,477,660.57
5. Step 5: Solve for x
   x = 728,477,660.57/31,113.92
6. Step 6: Final answer
   x = 23,413.24