Finding the Fourth Proportional to 144,086.27, 216,139.77 and 55,339.76

Step by Step Solution

1. Step 1: Write the proportion equation
   144,086.27 : 216,139.77 = 55,339.76 : x
2. Step 2: Convert to fraction form
   144,086.27/216,139.77 = 55,339.76/x
3. Step 3: Cross multiply
   144,086.27x = 216,139.77 × 55,339.76
4. Step 4: Simplify right side
   144,086.27x = 11,961,121,917.56
5. Step 5: Solve for x
   x = 11,961,121,917.56/144,086.27
6. Step 6: Final answer
   x = 83,013.62