Finding the Fourth Proportional to 62,396.39, 86,147.25 and 55,670.35

Step by Step Solution

1. Step 1: Write the proportion equation
   62,396.39 : 86,147.25 = 55,670.35 : x
2. Step 2: Convert to fraction form
   62,396.39/86,147.25 = 55,670.35/x
3. Step 3: Cross multiply
   62,396.39x = 86,147.25 × 55,670.35
4. Step 4: Simplify right side
   62,396.39x = 4,795,847,280.69
5. Step 5: Solve for x
   x = 4,795,847,280.69/62,396.39
6. Step 6: Final answer
   x = 76,860.98