Finding the Fourth Proportional to 79.33, 118.86 and 42.76

Step by Step Solution

1. Step 1: Write the proportion equation
   79.33 : 118.86 = 42.76 : x
2. Step 2: Convert to fraction form
   79.33/118.86 = 42.76/x
3. Step 3: Cross multiply
   79.33x = 118.86 × 42.76
4. Step 4: Simplify right side
   79.33x = 5,082.45
5. Step 5: Solve for x
   x = 5,082.45/79.33
6. Step 6: Final answer
   x = 64.07