Finding the Fourth Proportional to 62,693.20, 86,516.72 and 34,399.10

Step by Step Solution

1. Step 1: Write the proportion equation
   62,693.20 : 86,516.72 = 34,399.10 : x
2. Step 2: Convert to fraction form
   62,693.20/86,516.72 = 34,399.10/x
3. Step 3: Cross multiply
   62,693.20x = 86,516.72 × 34,399.10
4. Step 4: Simplify right side
   62,693.20x = 2,976,097,302.95
5. Step 5: Solve for x
   x = 2,976,097,302.95/62,693.20
6. Step 6: Final answer
   x = 47,470.82