Finding the Fourth Proportional to 77,089.62, 106,401.42 and 50,185.25

Step by Step Solution

1. Step 1: Write the proportion equation
   77,089.62 : 106,401.42 = 50,185.25 : x
2. Step 2: Convert to fraction form
   77,089.62/106,401.42 = 50,185.25/x
3. Step 3: Cross multiply
   77,089.62x = 106,401.42 × 50,185.25
4. Step 4: Simplify right side
   77,089.62x = 5,339,781,331.05
5. Step 5: Solve for x
   x = 5,339,781,331.05/77,089.62
6. Step 6: Final answer
   x = 69,267.19