Finding the Fourth Proportional to 83,429.16, 115,148.25 and 65,243.85

Step by Step Solution

1. Step 1: Write the proportion equation
   83,429.16 : 115,148.25 = 65,243.85 : x
2. Step 2: Convert to fraction form
   83,429.16/115,148.25 = 65,243.85/x
3. Step 3: Cross multiply
   83,429.16x = 115,148.25 × 65,243.85
4. Step 4: Simplify right side
   83,429.16x = 7,512,715,150.76
5. Step 5: Solve for x
   x = 7,512,715,150.76/83,429.16
6. Step 6: Final answer
   x = 90,049.03