Finding the Fourth Proportional to 574,680.72, 862,019.46 and 258,767.76

Step by Step Solution

1. Step 1: Write the proportion equation
   574,680.72 : 862,019.46 = 258,767.76 : x
2. Step 2: Convert to fraction form
   574,680.72/862,019.46 = 258,767.76/x
3. Step 3: Cross multiply
   574,680.72x = 862,019.46 × 258,767.76
4. Step 4: Simplify right side
   574,680.72x = 223,062,844,740.61
5. Step 5: Solve for x
   x = 223,062,844,740.61/574,680.72
6. Step 6: Final answer
   x = 388,150.91