Finding the Fourth Proportional to 31,053.84, 42,854.46 and 16,906.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,053.84 : 42,854.46 = 16,906.68 : x
2. Step 2: Convert to fraction form
   31,053.84/42,854.46 = 16,906.68/x
3. Step 3: Cross multiply
   31,053.84x = 42,854.46 × 16,906.68
4. Step 4: Simplify right side
   31,053.84x = 724,526,641.79
5. Step 5: Solve for x
   x = 724,526,641.79/31,053.84
6. Step 6: Final answer
   x = 23,331.31