Finding the Fourth Proportional to 82.69, 124.52 and 72.67

Step by Step Solution

1. Step 1: Write the proportion equation
   82.69 : 124.52 = 72.67 : x
2. Step 2: Convert to fraction form
   82.69/124.52 = 72.67/x
3. Step 3: Cross multiply
   82.69x = 124.52 × 72.67
4. Step 4: Simplify right side
   82.69x = 9,048.87
5. Step 5: Solve for x
   x = 9,048.87/82.69
6. Step 6: Final answer
   x = 109.43