Finding the Fourth Proportional to 64,568.58, 89,064.42 and 44,390.43

Step by Step Solution

1. Step 1: Write the proportion equation
   64,568.58 : 89,064.42 = 44,390.43 : x
2. Step 2: Convert to fraction form
   64,568.58/89,064.42 = 44,390.43/x
3. Step 3: Cross multiply
   64,568.58x = 89,064.42 × 44,390.43
4. Step 4: Simplify right side
   64,568.58x = 3,953,607,901.50
5. Step 5: Solve for x
   x = 3,953,607,901.50/64,568.58
6. Step 6: Final answer
   x = 61,231.14