Finding the Fourth Proportional to 72.16, 108.17 and 49.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72.16 : 108.17 = 49.34 : x
2. Step 2: Convert to fraction form
   72.16/108.17 = 49.34/x
3. Step 3: Cross multiply
   72.16x = 108.17 × 49.34
4. Step 4: Simplify right side
   72.16x = 5,336.86
5. Step 5: Solve for x
   x = 5,336.86/72.16
6. Step 6: Final answer
   x = 73.96