Finding the Fourth Proportional to 115,280.94, 159,087.56 and 64,298.18

Step by Step Solution

1. Step 1: Write the proportion equation
   115,280.94 : 159,087.56 = 64,298.18 : x
2. Step 2: Convert to fraction form
   115,280.94/159,087.56 = 64,298.18/x
3. Step 3: Cross multiply
   115,280.94x = 159,087.56 × 64,298.18
4. Step 4: Simplify right side
   115,280.94x = 10,229,040,568.64
5. Step 5: Solve for x
   x = 10,229,040,568.64/115,280.94
6. Step 6: Final answer
   x = 88,731.41