Finding the Fourth Proportional to 64,571.38, 89,110.15 and 35,499.39

Step by Step Solution

1. Step 1: Write the proportion equation
   64,571.38 : 89,110.15 = 35,499.39 : x
2. Step 2: Convert to fraction form
   64,571.38/89,110.15 = 35,499.39/x
3. Step 3: Cross multiply
   64,571.38x = 89,110.15 × 35,499.39
4. Step 4: Simplify right side
   64,571.38x = 3,163,356,329.37
5. Step 5: Solve for x
   x = 3,163,356,329.37/64,571.38
6. Step 6: Final answer
   x = 48,990.07