Finding the Fourth Proportional to 88,635.90, 122,068.71 and 86,700.54

Step by Step Solution

1. Step 1: Write the proportion equation
   88,635.90 : 122,068.71 = 86,700.54 : x
2. Step 2: Convert to fraction form
   88,635.90/122,068.71 = 86,700.54/x
3. Step 3: Cross multiply
   88,635.90x = 122,068.71 × 86,700.54
4. Step 4: Simplify right side
   88,635.90x = 10,583,423,074.10
5. Step 5: Solve for x
   x = 10,583,423,074.10/88,635.90
6. Step 6: Final answer
   x = 119,403.35