Finding the Fourth Proportional to 64,956.56, 89,640.33 and 35,148.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,956.56 : 89,640.33 = 35,148.56 : x
2. Step 2: Convert to fraction form
   64,956.56/89,640.33 = 35,148.56/x
3. Step 3: Cross multiply
   64,956.56x = 89,640.33 × 35,148.56
4. Step 4: Simplify right side
   64,956.56x = 3,150,728,517.42
5. Step 5: Solve for x
   x = 3,150,728,517.42/64,956.56
6. Step 6: Final answer
   x = 48,505.16