Finding the Fourth Proportional to 82.71, 113.99 and 67.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82.71 : 113.99 = 67.10 : x
2. Step 2: Convert to fraction form
   82.71/113.99 = 67.10/x
3. Step 3: Cross multiply
   82.71x = 113.99 × 67.10
4. Step 4: Simplify right side
   82.71x = 7,647.82
5. Step 5: Solve for x
   x = 7,647.82/82.71
6. Step 6: Final answer
   x = 92.47