Finding the Fourth Proportional to 573,561.31, 791,523.75 and 315,449.56

Step by Step Solution

1. Step 1: Write the proportion equation
   573,561.31 : 791,523.75 = 315,449.56 : x
2. Step 2: Convert to fraction form
   573,561.31/791,523.75 = 315,449.56/x
3. Step 3: Cross multiply
   573,561.31x = 791,523.75 × 315,449.56
4. Step 4: Simplify right side
   573,561.31x = 249,685,818,667.05
5. Step 5: Solve for x
   x = 249,685,818,667.05/573,561.31
6. Step 6: Final answer
   x = 435,325.42