Finding the Fourth Proportional to 80,540.33, 120,809.72 and 48,959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,540.33 : 120,809.72 = 48,959.12 : x
2. Step 2: Convert to fraction form
   80,540.33/120,809.72 = 48,959.12/x
3. Step 3: Cross multiply
   80,540.33x = 120,809.72 × 48,959.12
4. Step 4: Simplify right side
   80,540.33x = 5,914,736,729.80
5. Step 5: Solve for x
   x = 5,914,736,729.80/80,540.33
6. Step 6: Final answer
   x = 73,438.20