Finding the Fourth Proportional to 144,454.38, 216,705.76 and 49,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   144,454.38 : 216,705.76 = 49,680.72 : x
2. Step 2: Convert to fraction form
   144,454.38/216,705.76 = 49,680.72/x
3. Step 3: Cross multiply
   144,454.38x = 216,705.76 × 49,680.72
4. Step 4: Simplify right side
   144,454.38x = 10,766,098,184.95
5. Step 5: Solve for x
   x = 10,766,098,184.95/144,454.38
6. Step 6: Final answer
   x = 74,529.40