Finding the Fourth Proportional to 72.23, 108.18 and 50.54

Step by Step Solution

1. Step 1: Write the proportion equation
   72.23 : 108.18 = 50.54 : x
2. Step 2: Convert to fraction form
   72.23/108.18 = 50.54/x
3. Step 3: Cross multiply
   72.23x = 108.18 × 50.54
4. Step 4: Simplify right side
   72.23x = 5,466.88
5. Step 5: Solve for x
   x = 5,466.88/72.23
6. Step 6: Final answer
   x = 75.69