Finding the Fourth Proportional to 64,912.28, 89,578.90 and 35,104.28

Step by Step Solution

1. Step 1: Write the proportion equation
   64,912.28 : 89,578.90 = 35,104.28 : x
2. Step 2: Convert to fraction form
   64,912.28/89,578.90 = 35,104.28/x
3. Step 3: Cross multiply
   64,912.28x = 89,578.90 × 35,104.28
4. Step 4: Simplify right side
   64,912.28x = 3,144,602,787.69
5. Step 5: Solve for x
   x = 3,144,602,787.69/64,912.28
6. Step 6: Final answer
   x = 48,443.88