Finding the Fourth Proportional to 144.48, 216.69 and 98.82

Step by Step Solution

1. Step 1: Write the proportion equation
   144.48 : 216.69 = 98.82 : x
2. Step 2: Convert to fraction form
   144.48/216.69 = 98.82/x
3. Step 3: Cross multiply
   144.48x = 216.69 × 98.82
4. Step 4: Simplify right side
   144.48x = 21,413.31
5. Step 5: Solve for x
   x = 21,413.31/144.48
6. Step 6: Final answer
   x = 148.21