Finding the Fourth Proportional to 72.69, 109.04 and 34.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72.69 : 109.04 = 34.16 : x
2. Step 2: Convert to fraction form
   72.69/109.04 = 34.16/x
3. Step 3: Cross multiply
   72.69x = 109.04 × 34.16
4. Step 4: Simplify right side
   72.69x = 3,724.38
5. Step 5: Solve for x
   x = 3,724.38/72.69
6. Step 6: Final answer
   x = 51.23