Finding the Fourth Proportional to 67.25, 100.98 and 50.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67.25 : 100.98 = 50.15 : x
2. Step 2: Convert to fraction form
   67.25/100.98 = 50.15/x
3. Step 3: Cross multiply
   67.25x = 100.98 × 50.15
4. Step 4: Simplify right side
   67.25x = 5,063.64
5. Step 5: Solve for x
   x = 5,063.64/67.25
6. Step 6: Final answer
   x = 75.30