Finding the Fourth Proportional to 79.10, 118.71 and 48.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79.10 : 118.71 = 48.72 : x
2. Step 2: Convert to fraction form
   79.10/118.71 = 48.72/x
3. Step 3: Cross multiply
   79.10x = 118.71 × 48.72
4. Step 4: Simplify right side
   79.10x = 5,783.55
5. Step 5: Solve for x
   x = 5,783.55/79.10
6. Step 6: Final answer
   x = 73.12