Finding the Fourth Proportional to 411,668.37, 617,416.15 and 116,111.25

Step by Step Solution

1. Step 1: Write the proportion equation
   411,668.37 : 617,416.15 = 116,111.25 : x
2. Step 2: Convert to fraction form
   411,668.37/617,416.15 = 116,111.25/x
3. Step 3: Cross multiply
   411,668.37x = 617,416.15 × 116,111.25
4. Step 4: Simplify right side
   411,668.37x = 71,688,960,946.69
5. Step 5: Solve for x
   x = 71,688,960,946.69/411,668.37
6. Step 6: Final answer
   x = 174,142.50