Finding the Fourth Proportional to 79.32, 118.89 and 42.73

Step by Step Solution

1. Step 1: Write the proportion equation
   79.32 : 118.89 = 42.73 : x
2. Step 2: Convert to fraction form
   79.32/118.89 = 42.73/x
3. Step 3: Cross multiply
   79.32x = 118.89 × 42.73
4. Step 4: Simplify right side
   79.32x = 5,080.17
5. Step 5: Solve for x
   x = 5,080.17/79.32
6. Step 6: Final answer
   x = 64.05