Finding the Fourth Proportional to 31,113.56, 42,936.54 and 16,966.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,113.56 : 42,936.54 = 16,966.10 : x
2. Step 2: Convert to fraction form
   31,113.56/42,936.54 = 16,966.10/x
3. Step 3: Cross multiply
   31,113.56x = 42,936.54 × 16,966.10
4. Step 4: Simplify right side
   31,113.56x = 728,465,631.29
5. Step 5: Solve for x
   x = 728,465,631.29/31,113.56
6. Step 6: Final answer
   x = 23,413.12