Finding the Fourth Proportional to 62,519.90, 86,317.72 and 55,793.98

Step by Step Solution

1. Step 1: Write the proportion equation
   62,519.90 : 86,317.72 = 55,793.98 : x
2. Step 2: Convert to fraction form
   62,519.90/86,317.72 = 55,793.98/x
3. Step 3: Cross multiply
   62,519.90x = 86,317.72 × 55,793.98
4. Step 4: Simplify right side
   62,519.90x = 4,816,008,788.05
5. Step 5: Solve for x
   x = 4,816,008,788.05/62,519.90
6. Step 6: Final answer
   x = 77,031.61