Finding the Fourth Proportional to 115,387.67, 159,234.90 and 65,086.67

Step by Step Solution

1. Step 1: Write the proportion equation
   115,387.67 : 159,234.90 = 65,086.67 : x
2. Step 2: Convert to fraction form
   115,387.67/159,234.90 = 65,086.67/x
3. Step 3: Cross multiply
   115,387.67x = 159,234.90 × 65,086.67
4. Step 4: Simplify right side
   115,387.67x = 10,364,069,388.78
5. Step 5: Solve for x
   x = 10,364,069,388.78/115,387.67
6. Step 6: Final answer
   x = 89,819.56