Finding the Fourth Proportional to 83.38, 124.92 and 42.76

Step by Step Solution

1. Step 1: Write the proportion equation
   83.38 : 124.92 = 42.76 : x
2. Step 2: Convert to fraction form
   83.38/124.92 = 42.76/x
3. Step 3: Cross multiply
   83.38x = 124.92 × 42.76
4. Step 4: Simplify right side
   83.38x = 5,341.58
5. Step 5: Solve for x
   x = 5,341.58/83.38
6. Step 6: Final answer
   x = 64.06