Finding the Fourth Proportional to 72,062.72, 99,396.54 and 49,403.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,062.72 : 99,396.54 = 49,403.74 : x
2. Step 2: Convert to fraction form
   72,062.72/99,396.54 = 49,403.74/x
3. Step 3: Cross multiply
   72,062.72x = 99,396.54 × 49,403.74
4. Step 4: Simplify right side
   72,062.72x = 4,910,560,819.06
5. Step 5: Solve for x
   x = 4,910,560,819.06/72,062.72
6. Step 6: Final answer
   x = 68,142.87