Finding the Fourth Proportional to 106.29, 158.72 and 103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   106.29 : 158.72 = 103.59 : x
2. Step 2: Convert to fraction form
   106.29/158.72 = 103.59/x
3. Step 3: Cross multiply
   106.29x = 158.72 × 103.59
4. Step 4: Simplify right side
   106.29x = 16,441.29
5. Step 5: Solve for x
   x = 16,441.29/106.29
6. Step 6: Final answer
   x = 154.68