Finding the Fourth Proportional to 72,061.72, 99,395.16 and 49,402.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,061.72 : 99,395.16 = 49,402.74 : x
2. Step 2: Convert to fraction form
   72,061.72/99,395.16 = 49,402.74/x
3. Step 3: Cross multiply
   72,061.72x = 99,395.16 × 49,402.74
4. Step 4: Simplify right side
   72,061.72x = 4,910,393,246.74
5. Step 5: Solve for x
   x = 4,910,393,246.74/72,061.72
6. Step 6: Final answer
   x = 68,141.49