Finding the Fourth Proportional to 144,385.71, 216,615.47 and 55,615.38

Step by Step Solution

1. Step 1: Write the proportion equation
   144,385.71 : 216,615.47 = 55,615.38 : x
2. Step 2: Convert to fraction form
   144,385.71/216,615.47 = 55,615.38/x
3. Step 3: Cross multiply
   144,385.71x = 216,615.47 × 55,615.38
4. Step 4: Simplify right side
   144,385.71x = 12,047,150,587.54
5. Step 5: Solve for x
   x = 12,047,150,587.54/144,385.71
6. Step 6: Final answer
   x = 83,437.28