Finding the Fourth Proportional to 115,168.68, 158,942.52 and 64,877.40

Step by Step Solution

1. Step 1: Write the proportion equation
   115,168.68 : 158,942.52 = 64,877.40 : x
2. Step 2: Convert to fraction form
   115,168.68/158,942.52 = 64,877.40/x
3. Step 3: Cross multiply
   115,168.68x = 158,942.52 × 64,877.40
4. Step 4: Simplify right side
   115,168.68x = 10,311,777,447.05
5. Step 5: Solve for x
   x = 10,311,777,447.05/115,168.68
6. Step 6: Final answer
   x = 89,536.30