Finding the Fourth Proportional to 80,443.20, 120,605.28 and 48,846.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,443.20 : 120,605.28 = 48,846.72 : x
2. Step 2: Convert to fraction form
   80,443.20/120,605.28 = 48,846.72/x
3. Step 3: Cross multiply
   80,443.20x = 120,605.28 × 48,846.72
4. Step 4: Simplify right side
   80,443.20x = 5,891,172,342.68
5. Step 5: Solve for x
   x = 5,891,172,342.68/80,443.20
6. Step 6: Final answer
   x = 73,233.94