Finding the Fourth Proportional to 573,111.72, 790,648.90 and 357,878.12

Step by Step Solution

1. Step 1: Write the proportion equation
   573,111.72 : 790,648.90 = 357,878.12 : x
2. Step 2: Convert to fraction form
   573,111.72/790,648.90 = 357,878.12/x
3. Step 3: Cross multiply
   573,111.72x = 790,648.90 × 357,878.12
4. Step 4: Simplify right side
   573,111.72x = 282,955,936,169.43
5. Step 5: Solve for x
   x = 282,955,936,169.43/573,111.72
6. Step 6: Final answer
   x = 493,718.64