Finding the Fourth Proportional to 65,679.50, 90,637.71 and 35,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,679.50 : 90,637.71 = 35,871.50 : x
2. Step 2: Convert to fraction form
   65,679.50/90,637.71 = 35,871.50/x
3. Step 3: Cross multiply
   65,679.50x = 90,637.71 × 35,871.50
4. Step 4: Simplify right side
   65,679.50x = 3,251,310,614.27
5. Step 5: Solve for x
   x = 3,251,310,614.27/65,679.50
6. Step 6: Final answer
   x = 49,502.67