Finding the Fourth Proportional to 72,060.72, 99,393.78 and 49,401.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,060.72 : 99,393.78 = 49,401.74 : x
2. Step 2: Convert to fraction form
   72,060.72/99,393.78 = 49,401.74/x
3. Step 3: Cross multiply
   72,060.72x = 99,393.78 × 49,401.74
4. Step 4: Simplify right side
   72,060.72x = 4,910,225,180.21
5. Step 5: Solve for x
   x = 4,910,225,180.21/72,060.72
6. Step 6: Final answer
   x = 68,140.11