Finding the Fourth Proportional to 61,399.38, 91,650.86 and 52,690.26

Step by Step Solution

1. Step 1: Write the proportion equation
   61,399.38 : 91,650.86 = 52,690.26 : x
2. Step 2: Convert to fraction form
   61,399.38/91,650.86 = 52,690.26/x
3. Step 3: Cross multiply
   61,399.38x = 91,650.86 × 52,690.26
4. Step 4: Simplify right side
   61,399.38x = 4,829,107,379.17
5. Step 5: Solve for x
   x = 4,829,107,379.17/61,399.38
6. Step 6: Final answer
   x = 78,650.75