Finding the Fourth Proportional to 108.29, 149.37 and 71.45

Step by Step Solution

1. Step 1: Write the proportion equation
   108.29 : 149.37 = 71.45 : x
2. Step 2: Convert to fraction form
   108.29/149.37 = 71.45/x
3. Step 3: Cross multiply
   108.29x = 149.37 × 71.45
4. Step 4: Simplify right side
   108.29x = 10,672.59
5. Step 5: Solve for x
   x = 10,672.59/108.29
6. Step 6: Final answer
   x = 98.56