Finding the Fourth Proportional to 144,462.10, 216,401.55 and 144,462.10

Step by Step Solution

1. Step 1: Write the proportion equation
   144,462.10 : 216,401.55 = 144,462.10 : x
2. Step 2: Convert to fraction form
   144,462.10/216,401.55 = 144,462.10/x
3. Step 3: Cross multiply
   144,462.10x = 216,401.55 × 144,462.10
4. Step 4: Simplify right side
   144,462.10x = 31,261,822,356.26
5. Step 5: Solve for x
   x = 31,261,822,356.26/144,462.10
6. Step 6: Final answer
   x = 216,401.55