Finding the Fourth Proportional to 115,401.26, 159,253.15 and 64,411.05

Step by Step Solution

1. Step 1: Write the proportion equation
   115,401.26 : 159,253.15 = 64,411.05 : x
2. Step 2: Convert to fraction form
   115,401.26/159,253.15 = 64,411.05/x
3. Step 3: Cross multiply
   115,401.26x = 159,253.15 × 64,411.05
4. Step 4: Simplify right side
   115,401.26x = 10,257,662,607.31
5. Step 5: Solve for x
   x = 10,257,662,607.31/115,401.26
6. Step 6: Final answer
   x = 88,886.92