Finding the Fourth Proportional to 105.91, 146.10 and 69.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105.91 : 146.10 = 69.05 : x
2. Step 2: Convert to fraction form
   105.91/146.10 = 69.05/x
3. Step 3: Cross multiply
   105.91x = 146.10 × 69.05
4. Step 4: Simplify right side
   105.91x = 10,088.21
5. Step 5: Solve for x
   x = 10,088.21/105.91
6. Step 6: Final answer
   x = 95.26