Finding the Fourth Proportional to 42.18, 63.14 and 29.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42.18 : 63.14 = 29.15 : x
2. Step 2: Convert to fraction form
   42.18/63.14 = 29.15/x
3. Step 3: Cross multiply
   42.18x = 63.14 × 29.15
4. Step 4: Simplify right side
   42.18x = 1,840.31
5. Step 5: Solve for x
   x = 1,840.31/42.18
6. Step 6: Final answer
   x = 43.63