Finding the Fourth Proportional to 96.69, 145.59 and 71.18

Step by Step Solution

1. Step 1: Write the proportion equation
   96.69 : 145.59 = 71.18 : x
2. Step 2: Convert to fraction form
   96.69/145.59 = 71.18/x
3. Step 3: Cross multiply
   96.69x = 145.59 × 71.18
4. Step 4: Simplify right side
   96.69x = 10,362.37
5. Step 5: Solve for x
   x = 10,362.37/96.69
6. Step 6: Final answer
   x = 107.17