Finding the Fourth Proportional to 408,089, 612,168.78 and 112,601

Step by Step Solution

1. Step 1: Write the proportion equation
   408,089 : 612,168.78 = 112,601 : x
2. Step 2: Convert to fraction form
   408,089/612,168.78 = 112,601/x
3. Step 3: Cross multiply
   408,089x = 612,168.78 × 112,601
4. Step 4: Simplify right side
   408,089x = 68,930,816,796.78
5. Step 5: Solve for x
   x = 68,930,816,796.78/408,089
6. Step 6: Final answer
   x = 168,911.23