Finding the Fourth Proportional to 80,080.47, 120,193.16 and 42,672.15

Step by Step Solution

1. Step 1: Write the proportion equation
   80,080.47 : 120,193.16 = 42,672.15 : x
2. Step 2: Convert to fraction form
   80,080.47/120,193.16 = 42,672.15/x
3. Step 3: Cross multiply
   80,080.47x = 120,193.16 × 42,672.15
4. Step 4: Simplify right side
   80,080.47x = 5,128,900,552.49
5. Step 5: Solve for x
   x = 5,128,900,552.49/80,080.47
6. Step 6: Final answer
   x = 64,046.83