Finding the Fourth Proportional to 128.25, 192.24 and 67.37

Step by Step Solution

1. Step 1: Write the proportion equation
   128.25 : 192.24 = 67.37 : x
2. Step 2: Convert to fraction form
   128.25/192.24 = 67.37/x
3. Step 3: Cross multiply
   128.25x = 192.24 × 67.37
4. Step 4: Simplify right side
   128.25x = 12,950.25
5. Step 5: Solve for x
   x = 12,950.25/128.25
6. Step 6: Final answer
   x = 100.98