Finding the Fourth Proportional to 62,355.89, 86,079.45 and 39,725.91

Step by Step Solution

1. Step 1: Write the proportion equation
   62,355.89 : 86,079.45 = 39,725.91 : x
2. Step 2: Convert to fraction form
   62,355.89/86,079.45 = 39,725.91/x
3. Step 3: Cross multiply
   62,355.89x = 86,079.45 × 39,725.91
4. Step 4: Simplify right side
   62,355.89x = 3,419,584,483.55
5. Step 5: Solve for x
   x = 3,419,584,483.55/62,355.89
6. Step 6: Final answer
   x = 54,839.80