Finding the Fourth Proportional to 300,648.72, 414,906.12 and 166,512.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,648.72 : 414,906.12 = 166,512.72 : x
2. Step 2: Convert to fraction form
   300,648.72/414,906.12 = 166,512.72/x
3. Step 3: Cross multiply
   300,648.72x = 414,906.12 × 166,512.72
4. Step 4: Simplify right side
   300,648.72x = 69,087,146,585.85
5. Step 5: Solve for x
   x = 69,087,146,585.85/300,648.72
6. Step 6: Final answer
   x = 229,793.58