Finding the Fourth Proportional to 105,238.12, 145,118.09 and 69,382.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,238.12 : 145,118.09 = 69,382.25 : x
2. Step 2: Convert to fraction form
   105,238.12/145,118.09 = 69,382.25/x
3. Step 3: Cross multiply
   105,238.12x = 145,118.09 × 69,382.25
4. Step 4: Simplify right side
   105,238.12x = 10,068,620,136.15
5. Step 5: Solve for x
   x = 10,068,620,136.15/105,238.12
6. Step 6: Final answer
   x = 95,674.65