Finding the Fourth Proportional to 627,198.96, 865,535.31 and 340,719

Step by Step Solution

1. Step 1: Write the proportion equation
   627,198.96 : 865,535.31 = 340,719 : x
2. Step 2: Convert to fraction form
   627,198.96/865,535.31 = 340,719/x
3. Step 3: Cross multiply
   627,198.96x = 865,535.31 × 340,719
4. Step 4: Simplify right side
   627,198.96x = 294,904,325,287.89
5. Step 5: Solve for x
   x = 294,904,325,287.89/627,198.96
6. Step 6: Final answer
   x = 470,192.62