Finding the Fourth Proportional to 103.29, 142.59 and 70.71

Step by Step Solution

1. Step 1: Write the proportion equation
   103.29 : 142.59 = 70.71 : x
2. Step 2: Convert to fraction form
   103.29/142.59 = 70.71/x
3. Step 3: Cross multiply
   103.29x = 142.59 × 70.71
4. Step 4: Simplify right side
   103.29x = 10,082.54
5. Step 5: Solve for x
   x = 10,082.54/103.29
6. Step 6: Final answer
   x = 97.61