Finding the Fourth Proportional to 144,462.10, 216,628.35 and 55,686.10

Step by Step Solution

1. Step 1: Write the proportion equation
   144,462.10 : 216,628.35 = 55,686.10 : x
2. Step 2: Convert to fraction form
   144,462.10/216,628.35 = 55,686.10/x
3. Step 3: Cross multiply
   144,462.10x = 216,628.35 × 55,686.10
4. Step 4: Simplify right side
   144,462.10x = 12,063,187,960.94
5. Step 5: Solve for x
   x = 12,063,187,960.94/144,462.10
6. Step 6: Final answer
   x = 83,504.17