Finding the Fourth Proportional to 82.71, 114.69 and 79.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82.71 : 114.69 = 79.98 : x
2. Step 2: Convert to fraction form
   82.71/114.69 = 79.98/x
3. Step 3: Cross multiply
   82.71x = 114.69 × 79.98
4. Step 4: Simplify right side
   82.71x = 9,172.91
5. Step 5: Solve for x
   x = 9,172.91/82.71
6. Step 6: Final answer
   x = 110.90