Finding the Fourth Proportional to 144,387.96, 216,618.84 and 55,617.63

Step by Step Solution

1. Step 1: Write the proportion equation
   144,387.96 : 216,618.84 = 55,617.63 : x
2. Step 2: Convert to fraction form
   144,387.96/216,618.84 = 55,617.63/x
3. Step 3: Cross multiply
   144,387.96x = 216,618.84 × 55,617.63
4. Step 4: Simplify right side
   144,387.96x = 12,047,825,681.83
5. Step 5: Solve for x
   x = 12,047,825,681.83/144,387.96
6. Step 6: Final answer
   x = 83,440.66