Finding the Fourth Proportional to 584,019.50, 805,947.09 and 315,747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   584,019.50 : 805,947.09 = 315,747.50 : x
2. Step 2: Convert to fraction form
   584,019.50/805,947.09 = 315,747.50/x
3. Step 3: Cross multiply
   584,019.50x = 805,947.09 × 315,747.50
4. Step 4: Simplify right side
   584,019.50x = 254,475,778,799.78
5. Step 5: Solve for x
   x = 254,475,778,799.78/584,019.50
6. Step 6: Final answer
   x = 435,731.65