Finding the Fourth Proportional to 123.98, 170.94 and 101.82

Step by Step Solution

1. Step 1: Write the proportion equation
   123.98 : 170.94 = 101.82 : x
2. Step 2: Convert to fraction form
   123.98/170.94 = 101.82/x
3. Step 3: Cross multiply
   123.98x = 170.94 × 101.82
4. Step 4: Simplify right side
   123.98x = 17,404.60
5. Step 5: Solve for x
   x = 17,404.60/123.98
6. Step 6: Final answer
   x = 140.39