Finding the Fourth Proportional to 31,056.38, 42,858.71 and 16,910.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.38 : 42,858.71 = 16,910.13 : x
2. Step 2: Convert to fraction form
   31,056.38/42,858.71 = 16,910.13/x
3. Step 3: Cross multiply
   31,056.38x = 42,858.71 × 16,910.13
4. Step 4: Simplify right side
   31,056.38x = 724,746,273.18
5. Step 5: Solve for x
   x = 724,746,273.18/31,056.38
6. Step 6: Final answer
   x = 23,336.47