Finding the Fourth Proportional to 62,589.92, 86,323.82 and 55,020.15

Step by Step Solution

1. Step 1: Write the proportion equation
   62,589.92 : 86,323.82 = 55,020.15 : x
2. Step 2: Convert to fraction form
   62,589.92/86,323.82 = 55,020.15/x
3. Step 3: Cross multiply
   62,589.92x = 86,323.82 × 55,020.15
4. Step 4: Simplify right side
   62,589.92x = 4,749,549,249.87
5. Step 5: Solve for x
   x = 4,749,549,249.87/62,589.92
6. Step 6: Final answer
   x = 75,883.62