Finding the Fourth Proportional to 115,506.24, 159,396.89 and 64,519.89

Step by Step Solution

1. Step 1: Write the proportion equation
   115,506.24 : 159,396.89 = 64,519.89 : x
2. Step 2: Convert to fraction form
   115,506.24/159,396.89 = 64,519.89/x
3. Step 3: Cross multiply
   115,506.24x = 159,396.89 × 64,519.89
4. Step 4: Simplify right side
   115,506.24x = 10,284,269,486.54
5. Step 5: Solve for x
   x = 10,284,269,486.54/115,506.24
6. Step 6: Final answer
   x = 89,036.48