Finding the Fourth Proportional to 64,709.28, 89,352.72 and 43,558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,709.28 : 89,352.72 = 43,558.56 : x
2. Step 2: Convert to fraction form
   64,709.28/89,352.72 = 43,558.56/x
3. Step 3: Cross multiply
   64,709.28x = 89,352.72 × 43,558.56
4. Step 4: Simplify right side
   64,709.28x = 3,892,075,815.28
5. Step 5: Solve for x
   x = 3,892,075,815.28/64,709.28
6. Step 6: Final answer
   x = 60,147.10