Finding the Fourth Proportional to 573,123.28, 859,086.96 and 320,032.72

Step by Step Solution

1. Step 1: Write the proportion equation
   573,123.28 : 859,086.96 = 320,032.72 : x
2. Step 2: Convert to fraction form
   573,123.28/859,086.96 = 320,032.72/x
3. Step 3: Cross multiply
   573,123.28x = 859,086.96 × 320,032.72
4. Step 4: Simplify right side
   573,123.28x = 274,935,936,525.33
5. Step 5: Solve for x
   x = 274,935,936,525.33/573,123.28
6. Step 6: Final answer
   x = 479,715.18