Finding the Fourth Proportional to 115,618.18, 159,549.72 and 64,631.02

Step by Step Solution

1. Step 1: Write the proportion equation
   115,618.18 : 159,549.72 = 64,631.02 : x
2. Step 2: Convert to fraction form
   115,618.18/159,549.72 = 64,631.02/x
3. Step 3: Cross multiply
   115,618.18x = 159,549.72 × 64,631.02
4. Step 4: Simplify right side
   115,618.18x = 10,311,861,144.31
5. Step 5: Solve for x
   x = 10,311,861,144.31/115,618.18
6. Step 6: Final answer
   x = 89,188.92