Finding the Fourth Proportional to 144,089.55, 216,168.35 and 49,320.90

Step by Step Solution

1. Step 1: Write the proportion equation
   144,089.55 : 216,168.35 = 49,320.90 : x
2. Step 2: Convert to fraction form
   144,089.55/216,168.35 = 49,320.90/x
3. Step 3: Cross multiply
   144,089.55x = 216,168.35 × 49,320.90
4. Step 4: Simplify right side
   144,089.55x = 10,661,617,326.91
5. Step 5: Solve for x
   x = 10,661,617,326.91/144,089.55
6. Step 6: Final answer
   x = 73,992.99