Finding the Fourth Proportional to 31,414.79, 43,311.98 and 25,728.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,414.79 : 43,311.98 = 25,728.59 : x
2. Step 2: Convert to fraction form
   31,414.79/43,311.98 = 25,728.59/x
3. Step 3: Cross multiply
   31,414.79x = 43,311.98 × 25,728.59
4. Step 4: Simplify right side
   31,414.79x = 1,114,356,023.27
5. Step 5: Solve for x
   x = 1,114,356,023.27/31,414.79
6. Step 6: Final answer
   x = 35,472.34