Finding the Fourth Proportional to 31,053.88, 42,854.51 and 16,906.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.88 : 42,854.51 = 16,906.83 : x
2. Step 2: Convert to fraction form
   31,053.88/42,854.51 = 16,906.83/x
3. Step 3: Cross multiply
   31,053.88x = 42,854.51 × 16,906.83
4. Step 4: Simplify right side
   31,053.88x = 724,533,915.30
5. Step 5: Solve for x
   x = 724,533,915.30/31,053.88
6. Step 6: Final answer
   x = 23,331.51