Finding the Fourth Proportional to 571,499.20, 856,648.71 and 192,288.28

Step by Step Solution

1. Step 1: Write the proportion equation
   571,499.20 : 856,648.71 = 192,288.28 : x
2. Step 2: Convert to fraction form
   571,499.20/856,648.71 = 192,288.28/x
3. Step 3: Cross multiply
   571,499.20x = 856,648.71 × 192,288.28
4. Step 4: Simplify right side
   571,499.20x = 164,723,507,010.12
5. Step 5: Solve for x
   x = 164,723,507,010.12/571,499.20
6. Step 6: Final answer
   x = 288,230.51