Finding the Fourth Proportional to 80,292.42, 120,403.71 and 42,844.20

Step by Step Solution

1. Step 1: Write the proportion equation
   80,292.42 : 120,403.71 = 42,844.20 : x
2. Step 2: Convert to fraction form
   80,292.42/120,403.71 = 42,844.20/x
3. Step 3: Cross multiply
   80,292.42x = 120,403.71 × 42,844.20
4. Step 4: Simplify right side
   80,292.42x = 5,158,600,631.98
5. Step 5: Solve for x
   x = 5,158,600,631.98/80,292.42
6. Step 6: Final answer
   x = 64,247.67