Finding the Fourth Proportional to 65,320, 90,142.24 and 35,512.64

Step by Step Solution

1. Step 1: Write the proportion equation
   65,320 : 90,142.24 = 35,512.64 : x
2. Step 2: Convert to fraction form
   65,320/90,142.24 = 35,512.64/x
3. Step 3: Cross multiply
   65,320x = 90,142.24 × 35,512.64
4. Step 4: Simplify right side
   65,320x = 3,201,188,917.91
5. Step 5: Solve for x
   x = 3,201,188,917.91/65,320
6. Step 6: Final answer
   x = 49,007.79