Finding the Fourth Proportional to 64,880.56, 89,536.56 and 36,580.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,880.56 : 89,536.56 = 36,580.78 : x
2. Step 2: Convert to fraction form
   64,880.56/89,536.56 = 36,580.78/x
3. Step 3: Cross multiply
   64,880.56x = 89,536.56 × 36,580.78
4. Step 4: Simplify right side
   64,880.56x = 3,275,317,203.32
5. Step 5: Solve for x
   x = 3,275,317,203.32/64,880.56
6. Step 6: Final answer
   x = 50,482.26