Finding the Fourth Proportional to 77,089.79, 106,413.32 and 50,238.89

Step by Step Solution

1. Step 1: Write the proportion equation
   77,089.79 : 106,413.32 = 50,238.89 : x
2. Step 2: Convert to fraction form
   77,089.79/106,413.32 = 50,238.89/x
3. Step 3: Cross multiply
   77,089.79x = 106,413.32 × 50,238.89
4. Step 4: Simplify right side
   77,089.79x = 5,346,087,078.01
5. Step 5: Solve for x
   x = 5,346,087,078.01/77,089.79
6. Step 6: Final answer
   x = 69,348.83