Finding the Fourth Proportional to 91,647.12, 137,454.20 and 41,715.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,647.12 : 137,454.20 = 41,715.60 : x
2. Step 2: Convert to fraction form
   91,647.12/137,454.20 = 41,715.60/x
3. Step 3: Cross multiply
   91,647.12x = 137,454.20 × 41,715.60
4. Step 4: Simplify right side
   91,647.12x = 5,733,984,425.52
5. Step 5: Solve for x
   x = 5,733,984,425.52/91,647.12
6. Step 6: Final answer
   x = 62,565.90