Finding the Fourth Proportional to 115,930.69, 159,984.36 and 65,629.69

Step by Step Solution

1. Step 1: Write the proportion equation
   115,930.69 : 159,984.36 = 65,629.69 : x
2. Step 2: Convert to fraction form
   115,930.69/159,984.36 = 65,629.69/x
3. Step 3: Cross multiply
   115,930.69x = 159,984.36 × 65,629.69
4. Step 4: Simplify right side
   115,930.69x = 10,499,723,551.69
5. Step 5: Solve for x
   x = 10,499,723,551.69/115,930.69
6. Step 6: Final answer
   x = 90,568.98