Finding the Fourth Proportional to 64,578.49, 89,119.39 and 35,508.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,578.49 : 89,119.39 = 35,508.09 : x
2. Step 2: Convert to fraction form
   64,578.49/89,119.39 = 35,508.09/x
3. Step 3: Cross multiply
   64,578.49x = 89,119.39 × 35,508.09
4. Step 4: Simplify right side
   64,578.49x = 3,164,458,875.27
5. Step 5: Solve for x
   x = 3,164,458,875.27/64,578.49
6. Step 6: Final answer
   x = 49,001.75