Finding the Fourth Proportional to 82.69, 124.05 and 31.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82.69 : 124.05 = 31.32 : x
2. Step 2: Convert to fraction form
   82.69/124.05 = 31.32/x
3. Step 3: Cross multiply
   82.69x = 124.05 × 31.32
4. Step 4: Simplify right side
   82.69x = 3,885.25
5. Step 5: Solve for x
   x = 3,885.25/82.69
6. Step 6: Final answer
   x = 46.99