Finding the Fourth Proportional to 572,152.56, 789,546.60 and 317,488.56

Step by Step Solution

1. Step 1: Write the proportion equation
   572,152.56 : 789,546.60 = 317,488.56 : x
2. Step 2: Convert to fraction form
   572,152.56/789,546.60 = 317,488.56/x
3. Step 3: Cross multiply
   572,152.56x = 789,546.60 × 317,488.56
4. Step 4: Simplify right side
   572,152.56x = 250,672,013,086.90
5. Step 5: Solve for x
   x = 250,672,013,086.90/572,152.56
6. Step 6: Final answer
   x = 438,120.93