Finding the Fourth Proportional to 80,391.16, 110,942.50 and 48,553.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,391.16 : 110,942.50 = 48,553.72 : x
2. Step 2: Convert to fraction form
   80,391.16/110,942.50 = 48,553.72/x
3. Step 3: Cross multiply
   80,391.16x = 110,942.50 × 48,553.72
4. Step 4: Simplify right side
   80,391.16x = 5,386,671,081.10
5. Step 5: Solve for x
   x = 5,386,671,081.10/80,391.16
6. Step 6: Final answer
   x = 67,005.76