Finding the Fourth Proportional to 159,520.69, 220,136.23 and 91,536.18

Step by Step Solution

1. Step 1: Write the proportion equation
   159,520.69 : 220,136.23 = 91,536.18 : x
2. Step 2: Convert to fraction form
   159,520.69/220,136.23 = 91,536.18/x
3. Step 3: Cross multiply
   159,520.69x = 220,136.23 × 91,536.18
4. Step 4: Simplify right side
   159,520.69x = 20,150,428,862.71
5. Step 5: Solve for x
   x = 20,150,428,862.71/159,520.69
6. Step 6: Final answer
   x = 126,318.59