Finding the Fourth Proportional to 31,057.43, 42,857.91 and 16,910.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.43 : 42,857.91 = 16,910.37 : x
2. Step 2: Convert to fraction form
   31,057.43/42,857.91 = 16,910.37/x
3. Step 3: Cross multiply
   31,057.43x = 42,857.91 × 16,910.37
4. Step 4: Simplify right side
   31,057.43x = 724,743,115.53
5. Step 5: Solve for x
   x = 724,743,115.53/31,057.43
6. Step 6: Final answer
   x = 23,335.58