Finding the Fourth Proportional to 64,919.28, 89,588.56 and 35,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   64,919.28 : 89,588.56 = 35,111.28 : x
2. Step 2: Convert to fraction form
   64,919.28/89,588.56 = 35,111.28/x
3. Step 3: Cross multiply
   64,919.28x = 89,588.56 × 35,111.28
4. Step 4: Simplify right side
   64,919.28x = 3,145,569,014.96
5. Step 5: Solve for x
   x = 3,145,569,014.96/64,919.28
6. Step 6: Final answer
   x = 48,453.54