Finding the Fourth Proportional to 108,468.87, 162,081.46 and 82,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,468.87 : 162,081.46 = 82,680.50 : x
2. Step 2: Convert to fraction form
   108,468.87/162,081.46 = 82,680.50/x
3. Step 3: Cross multiply
   108,468.87x = 162,081.46 × 82,680.50
4. Step 4: Simplify right side
   108,468.87x = 13,400,976,153.53
5. Step 5: Solve for x
   x = 13,400,976,153.53/108,468.87
6. Step 6: Final answer
   x = 123,546.75