Finding the Fourth Proportional to 61,356.88, 91,587.38 and 52,647.76

Step by Step Solution

1. Step 1: Write the proportion equation
   61,356.88 : 91,587.38 = 52,647.76 : x
2. Step 2: Convert to fraction form
   61,356.88/91,587.38 = 52,647.76/x
3. Step 3: Cross multiply
   61,356.88x = 91,587.38 × 52,647.76
4. Step 4: Simplify right side
   61,356.88x = 4,821,870,401.27
5. Step 5: Solve for x
   x = 4,821,870,401.27/61,356.88
6. Step 6: Final answer
   x = 78,587.28