Finding the Fourth Proportional to 31,052.90, 42,854.10 and 16,906.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,052.90 : 42,854.10 = 16,906.76 : x
2. Step 2: Convert to fraction form
   31,052.90/42,854.10 = 16,906.76/x
3. Step 3: Cross multiply
   31,052.90x = 42,854.10 × 16,906.76
4. Step 4: Simplify right side
   31,052.90x = 724,523,983.72
5. Step 5: Solve for x
   x = 724,523,983.72/31,052.90
6. Step 6: Final answer
   x = 23,331.93