Finding the Fourth Proportional to 49,113.72, 67,851 and 39,665.88

Step by Step Solution

1. Step 1: Write the proportion equation
   49,113.72 : 67,851 = 39,665.88 : x
2. Step 2: Convert to fraction form
   49,113.72/67,851 = 39,665.88/x
3. Step 3: Cross multiply
   49,113.72x = 67,851 × 39,665.88
4. Step 4: Simplify right side
   49,113.72x = 2,691,369,623.88
5. Step 5: Solve for x
   x = 2,691,369,623.88/49,113.72
6. Step 6: Final answer
   x = 54,798.73