Finding the Fourth Proportional to 67.23, 100.91 and 50.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67.23 : 100.91 = 50.15 : x
2. Step 2: Convert to fraction form
   67.23/100.91 = 50.15/x
3. Step 3: Cross multiply
   67.23x = 100.91 × 50.15
4. Step 4: Simplify right side
   67.23x = 5,061.01
5. Step 5: Solve for x
   x = 5,061.01/67.23
6. Step 6: Final answer
   x = 75.28