Finding the Fourth Proportional to 105.83, 145.99 and 69.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105.83 : 145.99 = 69.01 : x
2. Step 2: Convert to fraction form
   105.83/145.99 = 69.01/x
3. Step 3: Cross multiply
   105.83x = 145.99 × 69.01
4. Step 4: Simplify right side
   105.83x = 10,074.23
5. Step 5: Solve for x
   x = 10,074.23/105.83
6. Step 6: Final answer
   x = 95.19