Finding the Fourth Proportional to 115,500.20, 159,363.06 and 65,189.48

Step by Step Solution

1. Step 1: Write the proportion equation
   115,500.20 : 159,363.06 = 65,189.48 : x
2. Step 2: Convert to fraction form
   115,500.20/159,363.06 = 65,189.48/x
3. Step 3: Cross multiply
   115,500.20x = 159,363.06 × 65,189.48
4. Step 4: Simplify right side
   115,500.20x = 10,388,795,012.61
5. Step 5: Solve for x
   x = 10,388,795,012.61/115,500.20
6. Step 6: Final answer
   x = 89,946.12