Finding the Fourth Proportional to 101,229.62, 139,697.91 and 55,908.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,229.62 : 139,697.91 = 55,908.72 : x
2. Step 2: Convert to fraction form
   101,229.62/139,697.91 = 55,908.72/x
3. Step 3: Cross multiply
   101,229.62x = 139,697.91 × 55,908.72
4. Step 4: Simplify right side
   101,229.62x = 7,810,331,334.78
5. Step 5: Solve for x
   x = 7,810,331,334.78/101,229.62
6. Step 6: Final answer
   x = 77,154.61