Finding the Fourth Proportional to 54,754.72, 81,736 and 48,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   54,754.72 : 81,736 = 48,111.72 : x
2. Step 2: Convert to fraction form
   54,754.72/81,736 = 48,111.72/x
3. Step 3: Cross multiply
   54,754.72x = 81,736 × 48,111.72
4. Step 4: Simplify right side
   54,754.72x = 3,932,459,545.92
5. Step 5: Solve for x
   x = 3,932,459,545.92/54,754.72
6. Step 6: Final answer
   x = 71,819.55