Finding the Fourth Proportional to 101,126.72, 139,526.88 and 65,318.24

Step by Step Solution

1. Step 1: Write the proportion equation
   101,126.72 : 139,526.88 = 65,318.24 : x
2. Step 2: Convert to fraction form
   101,126.72/139,526.88 = 65,318.24/x
3. Step 3: Cross multiply
   101,126.72x = 139,526.88 × 65,318.24
4. Step 4: Simplify right side
   101,126.72x = 9,113,650,234.29
5. Step 5: Solve for x
   x = 9,113,650,234.29/101,126.72
6. Step 6: Final answer
   x = 90,121.09