Finding the Fourth Proportional to 101,091.24, 139,500.96 and 55,771.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,091.24 : 139,500.96 = 55,771.72 : x
2. Step 2: Convert to fraction form
   101,091.24/139,500.96 = 55,771.72/x
3. Step 3: Cross multiply
   101,091.24x = 139,500.96 × 55,771.72
4. Step 4: Simplify right side
   101,091.24x = 7,780,208,480.85
5. Step 5: Solve for x
   x = 7,780,208,480.85/101,091.24
6. Step 6: Final answer
   x = 76,962.24