Finding the Fourth Proportional to 573,061.93, 790,809.82 and 318,406.57

Step by Step Solution

1. Step 1: Write the proportion equation
   573,061.93 : 790,809.82 = 318,406.57 : x
2. Step 2: Convert to fraction form
   573,061.93/790,809.82 = 318,406.57/x
3. Step 3: Cross multiply
   573,061.93x = 790,809.82 × 318,406.57
4. Step 4: Simplify right side
   573,061.93x = 251,799,042,308.52
5. Step 5: Solve for x
   x = 251,799,042,308.52/573,061.93
6. Step 6: Final answer
   x = 439,392.37