Finding the Fourth Proportional to 72,063.72, 99,397.92 and 49,404.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,063.72 : 99,397.92 = 49,404.74 : x
2. Step 2: Convert to fraction form
   72,063.72/99,397.92 = 49,404.74/x
3. Step 3: Cross multiply
   72,063.72x = 99,397.92 × 49,404.74
4. Step 4: Simplify right side
   72,063.72x = 4,910,728,394.14
5. Step 5: Solve for x
   x = 4,910,728,394.14/72,063.72
6. Step 6: Final answer
   x = 68,144.25