Finding the Fourth Proportional to 89.49, 123.41 and 61.83

Step by Step Solution

1. Step 1: Write the proportion equation
   89.49 : 123.41 = 61.83 : x
2. Step 2: Convert to fraction form
   89.49/123.41 = 61.83/x
3. Step 3: Cross multiply
   89.49x = 123.41 × 61.83
4. Step 4: Simplify right side
   89.49x = 7,630.13
5. Step 5: Solve for x
   x = 7,630.13/89.49
6. Step 6: Final answer
   x = 85.26