Finding the Fourth Proportional to 115,401.57, 159,253.59 and 64,411.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,401.57 : 159,253.59 = 64,411.38 : x
2. Step 2: Convert to fraction form
   115,401.57/159,253.59 = 64,411.38/x
3. Step 3: Cross multiply
   115,401.57x = 159,253.59 × 64,411.38
4. Step 4: Simplify right side
   115,401.57x = 10,257,743,501.85
5. Step 5: Solve for x
   x = 10,257,743,501.85/115,401.57
6. Step 6: Final answer
   x = 88,887.38