Finding the Fourth Proportional to 123.93, 185.69 and 89.37

Step by Step Solution

1. Step 1: Write the proportion equation
   123.93 : 185.69 = 89.37 : x
2. Step 2: Convert to fraction form
   123.93/185.69 = 89.37/x
3. Step 3: Cross multiply
   123.93x = 185.69 × 89.37
4. Step 4: Simplify right side
   123.93x = 16,595.34
5. Step 5: Solve for x
   x = 16,595.34/123.93
6. Step 6: Final answer
   x = 133.91