Finding the Fourth Proportional to 105,556.24, 158,196.66 and 80,504.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,556.24 : 158,196.66 = 80,504.56 : x
2. Step 2: Convert to fraction form
   105,556.24/158,196.66 = 80,504.56/x
3. Step 3: Cross multiply
   105,556.24x = 158,196.66 × 80,504.56
4. Step 4: Simplify right side
   105,556.24x = 12,735,552,506.77
5. Step 5: Solve for x
   x = 12,735,552,506.77/105,556.24
6. Step 6: Final answer
   x = 120,651.82