Finding the Fourth Proportional to 80,427.30, 120,738.15 and 79,844.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,427.30 : 120,738.15 = 79,844.10 : x
2. Step 2: Convert to fraction form
   80,427.30/120,738.15 = 79,844.10/x
3. Step 3: Cross multiply
   80,427.30x = 120,738.15 × 79,844.10
4. Step 4: Simplify right side
   80,427.30x = 9,640,228,922.42
5. Step 5: Solve for x
   x = 9,640,228,922.42/80,427.30
6. Step 6: Final answer
   x = 119,862.65