Finding the Fourth Proportional to 113,636.17, 170,559.42 and 57,515.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,636.17 : 170,559.42 = 57,515.69 : x
2. Step 2: Convert to fraction form
   113,636.17/170,559.42 = 57,515.69/x
3. Step 3: Cross multiply
   113,636.17x = 170,559.42 × 57,515.69
4. Step 4: Simplify right side
   113,636.17x = 9,809,842,727.30
5. Step 5: Solve for x
   x = 9,809,842,727.30/113,636.17
6. Step 6: Final answer
   x = 86,326.76