Finding the Fourth Proportional to 62,842.31, 86,693.49 and 55,679.48

Step by Step Solution

1. Step 1: Write the proportion equation
   62,842.31 : 86,693.49 = 55,679.48 : x
2. Step 2: Convert to fraction form
   62,842.31/86,693.49 = 55,679.48/x
3. Step 3: Cross multiply
   62,842.31x = 86,693.49 × 55,679.48
4. Step 4: Simplify right side
   62,842.31x = 4,827,048,442.59
5. Step 5: Solve for x
   x = 4,827,048,442.59/62,842.31
6. Step 6: Final answer
   x = 76,812.08