Finding the Fourth Proportional to 123,401.70, 173,112.30 and 123,401.70

Step by Step Solution

1. Step 1: Write the proportion equation
   123,401.70 : 173,112.30 = 123,401.70 : x
2. Step 2: Convert to fraction form
   123,401.70/173,112.30 = 123,401.70/x
3. Step 3: Cross multiply
   123,401.70x = 173,112.30 × 123,401.70
4. Step 4: Simplify right side
   123,401.70x = 21,362,352,110.91
5. Step 5: Solve for x
   x = 21,362,352,110.91/123,401.70
6. Step 6: Final answer
   x = 173,112.30