Finding the Fourth Proportional to 72.97, 109.42 and 50.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72.97 : 109.42 = 50.16 : x
2. Step 2: Convert to fraction form
   72.97/109.42 = 50.16/x
3. Step 3: Cross multiply
   72.97x = 109.42 × 50.16
4. Step 4: Simplify right side
   72.97x = 5,488.51
5. Step 5: Solve for x
   x = 5,488.51/72.97
6. Step 6: Final answer
   x = 75.22