Finding the Fourth Proportional to 455,419.72, 627,087.96 and 412,700.32

Step by Step Solution

1. Step 1: Write the proportion equation
   455,419.72 : 627,087.96 = 412,700.32 : x
2. Step 2: Convert to fraction form
   455,419.72/627,087.96 = 412,700.32/x
3. Step 3: Cross multiply
   455,419.72x = 627,087.96 × 412,700.32
4. Step 4: Simplify right side
   455,419.72x = 258,799,401,760.15
5. Step 5: Solve for x
   x = 258,799,401,760.15/455,419.72
6. Step 6: Final answer
   x = 568,265.69