Finding the Fourth Proportional to 89.81, 123.86 and 69.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89.81 : 123.86 = 69.05 : x
2. Step 2: Convert to fraction form
   89.81/123.86 = 69.05/x
3. Step 3: Cross multiply
   89.81x = 123.86 × 69.05
4. Step 4: Simplify right side
   89.81x = 8,553.02
5. Step 5: Solve for x
   x = 8,553.02/89.81
6. Step 6: Final answer
   x = 95.24