Finding the Fourth Proportional to 300.56, 414.72 and 167.78

Step by Step Solution

1. Step 1: Write the proportion equation
   300.56 : 414.72 = 167.78 : x
2. Step 2: Convert to fraction form
   300.56/414.72 = 167.78/x
3. Step 3: Cross multiply
   300.56x = 414.72 × 167.78
4. Step 4: Simplify right side
   300.56x = 69,581.72
5. Step 5: Solve for x
   x = 69,581.72/300.56
6. Step 6: Final answer
   x = 231.51