Finding the Fourth Proportional to 88,949.15, 133,099.72 and 65,621.15

Step by Step Solution

1. Step 1: Write the proportion equation
   88,949.15 : 133,099.72 = 65,621.15 : x
2. Step 2: Convert to fraction form
   88,949.15/133,099.72 = 65,621.15/x
3. Step 3: Cross multiply
   88,949.15x = 133,099.72 × 65,621.15
4. Step 4: Simplify right side
   88,949.15x = 8,734,156,691.08
5. Step 5: Solve for x
   x = 8,734,156,691.08/88,949.15
6. Step 6: Final answer
   x = 98,192.69