Finding the Fourth Proportional to 159,786.69, 220,498.25 and 91,755.80

Step by Step Solution

1. Step 1: Write the proportion equation
   159,786.69 : 220,498.25 = 91,755.80 : x
2. Step 2: Convert to fraction form
   159,786.69/220,498.25 = 91,755.80/x
3. Step 3: Cross multiply
   159,786.69x = 220,498.25 × 91,755.80
4. Step 4: Simplify right side
   159,786.69x = 20,231,993,419.82
5. Step 5: Solve for x
   x = 20,231,993,419.82/159,786.69
6. Step 6: Final answer
   x = 126,618.77