Finding the Fourth Proportional to 64,571.79, 89,104.75 and 35,889.59

Step by Step Solution

1. Step 1: Write the proportion equation
   64,571.79 : 89,104.75 = 35,889.59 : x
2. Step 2: Convert to fraction form
   64,571.79/89,104.75 = 35,889.59/x
3. Step 3: Cross multiply
   64,571.79x = 89,104.75 × 35,889.59
4. Step 4: Simplify right side
   64,571.79x = 3,197,933,077.59
5. Step 5: Solve for x
   x = 3,197,933,077.59/64,571.79
6. Step 6: Final answer
   x = 49,525.23