Finding the Fourth Proportional to 572,418.56, 789,906.72 and 317,753.34

Step by Step Solution

1. Step 1: Write the proportion equation
   572,418.56 : 789,906.72 = 317,753.34 : x
2. Step 2: Convert to fraction form
   572,418.56/789,906.72 = 317,753.34/x
3. Step 3: Cross multiply
   572,418.56x = 789,906.72 × 317,753.34
4. Step 4: Simplify right side
   572,418.56x = 250,995,498,568.45
5. Step 5: Solve for x
   x = 250,995,498,568.45/572,418.56
6. Step 6: Final answer
   x = 438,482.46