Finding the Fourth Proportional to 82.67, 113.82 and 71.69

Step by Step Solution

1. Step 1: Write the proportion equation
   82.67 : 113.82 = 71.69 : x
2. Step 2: Convert to fraction form
   82.67/113.82 = 71.69/x
3. Step 3: Cross multiply
   82.67x = 113.82 × 71.69
4. Step 4: Simplify right side
   82.67x = 8,159.76
5. Step 5: Solve for x
   x = 8,159.76/82.67
6. Step 6: Final answer
   x = 98.70