Finding the Fourth Proportional to 411,564.72, 617,283.78 and 112,068.42

Step by Step Solution

1. Step 1: Write the proportion equation
   411,564.72 : 617,283.78 = 112,068.42 : x
2. Step 2: Convert to fraction form
   411,564.72/617,283.78 = 112,068.42/x
3. Step 3: Cross multiply
   411,564.72x = 617,283.78 × 112,068.42
4. Step 4: Simplify right side
   411,564.72x = 69,178,017,916.23
5. Step 5: Solve for x
   x = 69,178,017,916.23/411,564.72
6. Step 6: Final answer
   x = 168,085.39