Finding the Fourth Proportional to 105.65, 158.27 and 69.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105.65 : 158.27 = 69.47 : x
2. Step 2: Convert to fraction form
   105.65/158.27 = 69.47/x
3. Step 3: Cross multiply
   105.65x = 158.27 × 69.47
4. Step 4: Simplify right side
   105.65x = 10,993.88
5. Step 5: Solve for x
   x = 10,993.88/105.65
6. Step 6: Final answer
   x = 104.06