Finding the Fourth Proportional to 64,905.50, 89,569.60 and 35,097.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,905.50 : 89,569.60 = 35,097.50 : x
2. Step 2: Convert to fraction form
   64,905.50/89,569.60 = 35,097.50/x
3. Step 3: Cross multiply
   64,905.50x = 89,569.60 × 35,097.50
4. Step 4: Simplify right side
   64,905.50x = 3,143,669,036
5. Step 5: Solve for x
   x = 3,143,669,036/64,905.50
6. Step 6: Final answer
   x = 48,434.56