Finding the Fourth Proportional to 64,559.10, 89,089.18 and 35,880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,559.10 : 89,089.18 = 35,880.56 : x
2. Step 2: Convert to fraction form
   64,559.10/89,089.18 = 35,880.56/x
3. Step 3: Cross multiply
   64,559.10x = 89,089.18 × 35,880.56
4. Step 4: Simplify right side
   64,559.10x = 3,196,569,668.34
5. Step 5: Solve for x
   x = 3,196,569,668.34/64,559.10
6. Step 6: Final answer
   x = 49,513.85