Finding the Fourth Proportional to 65,085.35, 89,864.33 and 50,761.18

Step by Step Solution

1. Step 1: Write the proportion equation
   65,085.35 : 89,864.33 = 50,761.18 : x
2. Step 2: Convert to fraction form
   65,085.35/89,864.33 = 50,761.18/x
3. Step 3: Cross multiply
   65,085.35x = 89,864.33 × 50,761.18
4. Step 4: Simplify right side
   65,085.35x = 4,561,618,952.24
5. Step 5: Solve for x
   x = 4,561,618,952.24/65,085.35
6. Step 6: Final answer
   x = 70,086.73