Finding the Fourth Proportional to 71.42, 106.37 and 71.08

Step by Step Solution

1. Step 1: Write the proportion equation
   71.42 : 106.37 = 71.08 : x
2. Step 2: Convert to fraction form
   71.42/106.37 = 71.08/x
3. Step 3: Cross multiply
   71.42x = 106.37 × 71.08
4. Step 4: Simplify right side
   71.42x = 7,560.78
5. Step 5: Solve for x
   x = 7,560.78/71.42
6. Step 6: Final answer
   x = 105.86