Finding the Fourth Proportional to 151.50, 208.88 and 123.82

Step by Step Solution

1. Step 1: Write the proportion equation
   151.50 : 208.88 = 123.82 : x
2. Step 2: Convert to fraction form
   151.50/208.88 = 123.82/x
3. Step 3: Cross multiply
   151.50x = 208.88 × 123.82
4. Step 4: Simplify right side
   151.50x = 25,863.52
5. Step 5: Solve for x
   x = 25,863.52/151.50
6. Step 6: Final answer
   x = 170.72