Finding the Fourth Proportional to 300,870.56, 414,962.18 and 255,698.06

Step by Step Solution

1. Step 1: Write the proportion equation
   300,870.56 : 414,962.18 = 255,698.06 : x
2. Step 2: Convert to fraction form
   300,870.56/414,962.18 = 255,698.06/x
3. Step 3: Cross multiply
   300,870.56x = 414,962.18 × 255,698.06
4. Step 4: Simplify right side
   300,870.56x = 106,105,024,399.37
5. Step 5: Solve for x
   x = 106,105,024,399.37/300,870.56
6. Step 6: Final answer
   x = 352,660.04