Finding the Fourth Proportional to 115,401.72, 159,262.39 and 64,424.48

Step by Step Solution

1. Step 1: Write the proportion equation
   115,401.72 : 159,262.39 = 64,424.48 : x
2. Step 2: Convert to fraction form
   115,401.72/159,262.39 = 64,424.48/x
3. Step 3: Cross multiply
   115,401.72x = 159,262.39 × 64,424.48
4. Step 4: Simplify right side
   115,401.72x = 10,260,395,943.53
5. Step 5: Solve for x
   x = 10,260,395,943.53/115,401.72
6. Step 6: Final answer
   x = 88,910.25