Finding the Fourth Proportional to 300,572.28, 414,789.78 and 166,436.28

Step by Step Solution

1. Step 1: Write the proportion equation
   300,572.28 : 414,789.78 = 166,436.28 : x
2. Step 2: Convert to fraction form
   300,572.28/414,789.78 = 166,436.28/x
3. Step 3: Cross multiply
   300,572.28x = 414,789.78 × 166,436.28
4. Step 4: Simplify right side
   300,572.28x = 69,036,067,965.22
5. Step 5: Solve for x
   x = 69,036,067,965.22/300,572.28
6. Step 6: Final answer
   x = 229,682.09