Finding the Fourth Proportional to 82.74, 123.34 and 73.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82.74 : 123.34 = 73.56 : x
2. Step 2: Convert to fraction form
   82.74/123.34 = 73.56/x
3. Step 3: Cross multiply
   82.74x = 123.34 × 73.56
4. Step 4: Simplify right side
   82.74x = 9,072.89
5. Step 5: Solve for x
   x = 9,072.89/82.74
6. Step 6: Final answer
   x = 109.66