Finding the Fourth Proportional to 31,039.88, 42,835.05 and 16,892.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,039.88 : 42,835.05 = 16,892.82 : x
2. Step 2: Convert to fraction form
   31,039.88/42,835.05 = 16,892.82/x
3. Step 3: Cross multiply
   31,039.88x = 42,835.05 × 16,892.82
4. Step 4: Simplify right side
   31,039.88x = 723,604,789.34
5. Step 5: Solve for x
   x = 723,604,789.34/31,039.88
6. Step 6: Final answer
   x = 23,312.10