Finding the Fourth Proportional to 78,413.72, 117,622.89 and 19,249.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,413.72 : 117,622.89 = 19,249.39 : x
2. Step 2: Convert to fraction form
   78,413.72/117,622.89 = 19,249.39/x
3. Step 3: Cross multiply
   78,413.72x = 117,622.89 × 19,249.39
4. Step 4: Simplify right side
   78,413.72x = 2,264,168,882.54
5. Step 5: Solve for x
   x = 2,264,168,882.54/78,413.72
6. Step 6: Final answer
   x = 28,874.65