Finding the Fourth Proportional to 583,830.72, 805,687.56 and 315,558.72

Step by Step Solution

1. Step 1: Write the proportion equation
   583,830.72 : 805,687.56 = 315,558.72 : x
2. Step 2: Convert to fraction form
   583,830.72/805,687.56 = 315,558.72/x
3. Step 3: Cross multiply
   583,830.72x = 805,687.56 × 315,558.72
4. Step 4: Simplify right side
   583,830.72x = 254,241,735,153.52
5. Step 5: Solve for x
   x = 254,241,735,153.52/583,830.72
6. Step 6: Final answer
   x = 435,471.66