Finding the Fourth Proportional to 108,468.69, 162,737.59 and 86,367.57

Step by Step Solution

1. Step 1: Write the proportion equation
   108,468.69 : 162,737.59 = 86,367.57 : x
2. Step 2: Convert to fraction form
   108,468.69/162,737.59 = 86,367.57/x
3. Step 3: Cross multiply
   108,468.69x = 162,737.59 × 86,367.57
4. Step 4: Simplify right side
   108,468.69x = 14,055,249,166.35
5. Step 5: Solve for x
   x = 14,055,249,166.35/108,468.69
6. Step 6: Final answer
   x = 129,578.87