Finding the Fourth Proportional to 62,693.20, 86,516.72 and 34,399.09

Step by Step Solution

1. Step 1: Write the proportion equation
   62,693.20 : 86,516.72 = 34,399.09 : x
2. Step 2: Convert to fraction form
   62,693.20/86,516.72 = 34,399.09/x
3. Step 3: Cross multiply
   62,693.20x = 86,516.72 × 34,399.09
4. Step 4: Simplify right side
   62,693.20x = 2,976,096,437.78
5. Step 5: Solve for x
   x = 2,976,096,437.78/62,693.20
6. Step 6: Final answer
   x = 47,470.80