Finding the Fourth Proportional to 113,510.40, 171,115.68 and 105,898.56

Step by Step Solution

1. Step 1: Write the proportion equation
   113,510.40 : 171,115.68 = 105,898.56 : x
2. Step 2: Convert to fraction form
   113,510.40/171,115.68 = 105,898.56/x
3. Step 3: Cross multiply
   113,510.40x = 171,115.68 × 105,898.56
4. Step 4: Simplify right side
   113,510.40x = 18,120,904,105.42
5. Step 5: Solve for x
   x = 18,120,904,105.42/113,510.40
6. Step 6: Final answer
   x = 159,640.91