Finding the Fourth Proportional to 31,053.85, 42,854.88 and 16,906.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.85 : 42,854.88 = 16,906.93 : x
2. Step 2: Convert to fraction form
   31,053.85/42,854.88 = 16,906.93/x
3. Step 3: Cross multiply
   31,053.85x = 42,854.88 × 16,906.93
4. Step 4: Simplify right side
   31,053.85x = 724,544,456.32
5. Step 5: Solve for x
   x = 724,544,456.32/31,053.85
6. Step 6: Final answer
   x = 23,331.87