Finding the Fourth Proportional to 105,895.92, 158,843.94 and 66,480.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,895.92 : 158,843.94 = 66,480.72 : x
2. Step 2: Convert to fraction form
   105,895.92/158,843.94 = 66,480.72/x
3. Step 3: Cross multiply
   105,895.92x = 158,843.94 × 66,480.72
4. Step 4: Simplify right side
   105,895.92x = 10,560,059,498.84
5. Step 5: Solve for x
   x = 10,560,059,498.84/105,895.92
6. Step 6: Final answer
   x = 99,721.12