Finding the Fourth Proportional to 155,105.70, 217,443.23 and 155,105.70

Step by Step Solution

1. Step 1: Write the proportion equation
   155,105.70 : 217,443.23 = 155,105.70 : x
2. Step 2: Convert to fraction form
   155,105.70/217,443.23 = 155,105.70/x
3. Step 3: Cross multiply
   155,105.70x = 217,443.23 × 155,105.70
4. Step 4: Simplify right side
   155,105.70x = 33,726,684,399.41
5. Step 5: Solve for x
   x = 33,726,684,399.41/155,105.70
6. Step 6: Final answer
   x = 217,443.23