Finding the Fourth Proportional to 62,496.42, 86,285.31 and 55,770.48

Step by Step Solution

1. Step 1: Write the proportion equation
   62,496.42 : 86,285.31 = 55,770.48 : x
2. Step 2: Convert to fraction form
   62,496.42/86,285.31 = 55,770.48/x
3. Step 3: Cross multiply
   62,496.42x = 86,285.31 × 55,770.48
4. Step 4: Simplify right side
   62,496.42x = 4,812,173,155.65
5. Step 5: Solve for x
   x = 4,812,173,155.65/62,496.42
6. Step 6: Final answer
   x = 76,999.18