Finding the Fourth Proportional to 108.75, 149.82 and 71.82

Step by Step Solution

1. Step 1: Write the proportion equation
   108.75 : 149.82 = 71.82 : x
2. Step 2: Convert to fraction form
   108.75/149.82 = 71.82/x
3. Step 3: Cross multiply
   108.75x = 149.82 × 71.82
4. Step 4: Simplify right side
   108.75x = 10,760.07
5. Step 5: Solve for x
   x = 10,760.07/108.75
6. Step 6: Final answer
   x = 98.94