Finding the Fourth Proportional to 82.96, 123.73 and 71.62

Step by Step Solution

1. Step 1: Write the proportion equation
   82.96 : 123.73 = 71.62 : x
2. Step 2: Convert to fraction form
   82.96/123.73 = 71.62/x
3. Step 3: Cross multiply
   82.96x = 123.73 × 71.62
4. Step 4: Simplify right side
   82.96x = 8,861.54
5. Step 5: Solve for x
   x = 8,861.54/82.96
6. Step 6: Final answer
   x = 106.82