Finding the Fourth Proportional to 300,570, 414,786.72 and 166,434

Step by Step Solution

1. Step 1: Write the proportion equation
   300,570 : 414,786.72 = 166,434 : x
2. Step 2: Convert to fraction form
   300,570/414,786.72 = 166,434/x
3. Step 3: Cross multiply
   300,570x = 414,786.72 × 166,434
4. Step 4: Simplify right side
   300,570x = 69,034,612,956.48
5. Step 5: Solve for x
   x = 69,034,612,956.48/300,570
6. Step 6: Final answer
   x = 229,678.99