Finding the Fourth Proportional to 573,061.56, 790,790.22 and 318,404.04

Step by Step Solution

1. Step 1: Write the proportion equation
   573,061.56 : 790,790.22 = 318,404.04 : x
2. Step 2: Convert to fraction form
   573,061.56/790,790.22 = 318,404.04/x
3. Step 3: Cross multiply
   573,061.56x = 790,790.22 × 318,404.04
4. Step 4: Simplify right side
   573,061.56x = 251,790,800,840.49
5. Step 5: Solve for x
   x = 251,790,800,840.49/573,061.56
6. Step 6: Final answer
   x = 439,378.28