Finding the Fourth Proportional to 69.72, 104.63 and 29.15

Step by Step Solution

1. Step 1: Write the proportion equation
   69.72 : 104.63 = 29.15 : x
2. Step 2: Convert to fraction form
   69.72/104.63 = 29.15/x
3. Step 3: Cross multiply
   69.72x = 104.63 × 29.15
4. Step 4: Simplify right side
   69.72x = 3,049.69
5. Step 5: Solve for x
   x = 3,049.69/69.72
6. Step 6: Final answer
   x = 43.74