Finding the Fourth Proportional to 115,459.67, 159,333.86 and 65,158.31

Step by Step Solution

1. Step 1: Write the proportion equation
   115,459.67 : 159,333.86 = 65,158.31 : x
2. Step 2: Convert to fraction form
   115,459.67/159,333.86 = 65,158.31/x
3. Step 3: Cross multiply
   115,459.67x = 159,333.86 × 65,158.31
4. Step 4: Simplify right side
   115,459.67x = 10,381,923,920.92
5. Step 5: Solve for x
   x = 10,381,923,920.92/115,459.67
6. Step 6: Final answer
   x = 89,918.19