Finding the Fourth Proportional to 105,599.69, 145,727.57 and 63,168.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,599.69 : 145,727.57 = 63,168.24 : x
2. Step 2: Convert to fraction form
   105,599.69/145,727.57 = 63,168.24/x
3. Step 3: Cross multiply
   105,599.69x = 145,727.57 × 63,168.24
4. Step 4: Simplify right side
   105,599.69x = 9,205,354,116.38
5. Step 5: Solve for x
   x = 9,205,354,116.38/105,599.69
6. Step 6: Final answer
   x = 87,172.17