Finding the Fourth Proportional to 443,841.24, 665,766.72 and 128,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   443,841.24 : 665,766.72 = 128,300.88 : x
2. Step 2: Convert to fraction form
   443,841.24/665,766.72 = 128,300.88/x
3. Step 3: Cross multiply
   443,841.24x = 665,766.72 × 128,300.88
4. Step 4: Simplify right side
   443,841.24x = 85,418,456,050.71
5. Step 5: Solve for x
   x = 85,418,456,050.71/443,841.24
6. Step 6: Final answer
   x = 192,452.72