Finding the Fourth Proportional to 64,619.47, 89,174.37 and 35,939.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,619.47 : 89,174.37 = 35,939.38 : x
2. Step 2: Convert to fraction form
   64,619.47/89,174.37 = 35,939.38/x
3. Step 3: Cross multiply
   64,619.47x = 89,174.37 × 35,939.38
4. Step 4: Simplify right side
   64,619.47x = 3,204,871,569.69
5. Step 5: Solve for x
   x = 3,204,871,569.69/64,619.47
6. Step 6: Final answer
   x = 49,596.07