Finding the Fourth Proportional to 82.69, 123.78 and 74.00

Step by Step Solution

1. Step 1: Write the proportion equation
   82.69 : 123.78 = 74.00 : x
2. Step 2: Convert to fraction form
   82.69/123.78 = 74.00/x
3. Step 3: Cross multiply
   82.69x = 123.78 × 74.00
4. Step 4: Simplify right side
   82.69x = 9,158.82
5. Step 5: Solve for x
   x = 9,158.82/82.69
6. Step 6: Final answer
   x = 110.76