Finding the Fourth Proportional to 64,579.52, 89,120.81 and 35,509.12

Step by Step Solution

1. Step 1: Write the proportion equation
   64,579.52 : 89,120.81 = 35,509.12 : x
2. Step 2: Convert to fraction form
   64,579.52/89,120.81 = 35,509.12/x
3. Step 3: Cross multiply
   64,579.52x = 89,120.81 × 35,509.12
4. Step 4: Simplify right side
   64,579.52x = 3,164,601,402.76
5. Step 5: Solve for x
   x = 3,164,601,402.76/64,579.52
6. Step 6: Final answer
   x = 49,003.17