Finding the Fourth Proportional to 31,082.31, 42,892.41 and 16,934.85

Step by Step Solution

1. Step 1: Write the proportion equation
   31,082.31 : 42,892.41 = 16,934.85 : x
2. Step 2: Convert to fraction form
   31,082.31/42,892.41 = 16,934.85/x
3. Step 3: Cross multiply
   31,082.31x = 42,892.41 × 16,934.85
4. Step 4: Simplify right side
   31,082.31x = 726,376,529.49
5. Step 5: Solve for x
   x = 726,376,529.49/31,082.31
6. Step 6: Final answer
   x = 23,369.45