Finding the Fourth Proportional to 82.63, 123.36 and 82.06

Step by Step Solution

1. Step 1: Write the proportion equation
   82.63 : 123.36 = 82.06 : x
2. Step 2: Convert to fraction form
   82.63/123.36 = 82.06/x
3. Step 3: Cross multiply
   82.63x = 123.36 × 82.06
4. Step 4: Simplify right side
   82.63x = 10,122.92
5. Step 5: Solve for x
   x = 10,122.92/82.63
6. Step 6: Final answer
   x = 122.51