Finding the Fourth Proportional to 65,395.49, 90,073.89 and 50,259.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,395.49 : 90,073.89 = 50,259.18 : x
2. Step 2: Convert to fraction form
   65,395.49/90,073.89 = 50,259.18/x
3. Step 3: Cross multiply
   65,395.49x = 90,073.89 × 50,259.18
4. Step 4: Simplify right side
   65,395.49x = 4,527,040,188.59
5. Step 5: Solve for x
   x = 4,527,040,188.59/65,395.49
6. Step 6: Final answer
   x = 69,225.58