Finding the Fourth Proportional to 42.56, 63.78 and 29.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42.56 : 63.78 = 29.08 : x
2. Step 2: Convert to fraction form
   42.56/63.78 = 29.08/x
3. Step 3: Cross multiply
   42.56x = 63.78 × 29.08
4. Step 4: Simplify right side
   42.56x = 1,854.72
5. Step 5: Solve for x
   x = 1,854.72/42.56
6. Step 6: Final answer
   x = 43.58