Finding the Fourth Proportional to 89.46, 123.49 and 61.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89.46 : 123.49 = 61.46 : x
2. Step 2: Convert to fraction form
   89.46/123.49 = 61.46/x
3. Step 3: Cross multiply
   89.46x = 123.49 × 61.46
4. Step 4: Simplify right side
   89.46x = 7,588.77
5. Step 5: Solve for x
   x = 7,588.77/89.46
6. Step 6: Final answer
   x = 84.83