Finding the Fourth Proportional to 89.51, 123.46 and 61.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89.51 : 123.46 = 61.49 : x
2. Step 2: Convert to fraction form
   89.51/123.46 = 61.49/x
3. Step 3: Cross multiply
   89.51x = 123.46 × 61.49
4. Step 4: Simplify right side
   89.51x = 7,591.71
5. Step 5: Solve for x
   x = 7,591.71/89.51
6. Step 6: Final answer
   x = 84.82