Finding the Fourth Proportional to 495,410.39, 743,401.59 and 267,706.78

Step by Step Solution

1. Step 1: Write the proportion equation
   495,410.39 : 743,401.59 = 267,706.78 : x
2. Step 2: Convert to fraction form
   495,410.39/743,401.59 = 267,706.78/x
3. Step 3: Cross multiply
   495,410.39x = 743,401.59 × 267,706.78
4. Step 4: Simplify right side
   495,410.39x = 199,013,644,047.28
5. Step 5: Solve for x
   x = 199,013,644,047.28/495,410.39
6. Step 6: Final answer
   x = 401,714.72