Finding the Fourth Proportional to 65,785.16, 90,783.32 and 35,570.28

Step by Step Solution

1. Step 1: Write the proportion equation
   65,785.16 : 90,783.32 = 35,570.28 : x
2. Step 2: Convert to fraction form
   65,785.16/90,783.32 = 35,570.28/x
3. Step 3: Cross multiply
   65,785.16x = 90,783.32 × 35,570.28
4. Step 4: Simplify right side
   65,785.16x = 3,229,188,111.73
5. Step 5: Solve for x
   x = 3,229,188,111.73/65,785.16
6. Step 6: Final answer
   x = 49,086.88