Finding the Fourth Proportional to 298,496.10, 447,452.55 and 267,003.30

Step by Step Solution

1. Step 1: Write the proportion equation
   298,496.10 : 447,452.55 = 267,003.30 : x
2. Step 2: Convert to fraction form
   298,496.10/447,452.55 = 267,003.30/x
3. Step 3: Cross multiply
   298,496.10x = 447,452.55 × 267,003.30
4. Step 4: Simplify right side
   298,496.10x = 119,471,307,443.42
5. Step 5: Solve for x
   x = 119,471,307,443.42/298,496.10
6. Step 6: Final answer
   x = 400,244.12