Finding the Fourth Proportional to 65,874.72, 90,906.78 and 35,660.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,874.72 : 90,906.78 = 35,660.10 : x
2. Step 2: Convert to fraction form
   65,874.72/90,906.78 = 35,660.10/x
3. Step 3: Cross multiply
   65,874.72x = 90,906.78 × 35,660.10
4. Step 4: Simplify right side
   65,874.72x = 3,241,744,865.48
5. Step 5: Solve for x
   x = 3,241,744,865.48/65,874.72
6. Step 6: Final answer
   x = 49,210.76