Finding the Fourth Proportional to 626,568.31, 864,665.04 and 340,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   626,568.31 : 864,665.04 = 340,088.50 : x
2. Step 2: Convert to fraction form
   626,568.31/864,665.04 = 340,088.50/x
3. Step 3: Cross multiply
   626,568.31x = 864,665.04 × 340,088.50
4. Step 4: Simplify right side
   626,568.31x = 294,062,636,456.04
5. Step 5: Solve for x
   x = 294,062,636,456.04/626,568.31
6. Step 6: Final answer
   x = 469,322.55