Finding the Fourth Proportional to 144,144.50, 216,161.67 and 69,243.30

Step by Step Solution

1. Step 1: Write the proportion equation
   144,144.50 : 216,161.67 = 69,243.30 : x
2. Step 2: Convert to fraction form
   144,144.50/216,161.67 = 69,243.30/x
3. Step 3: Cross multiply
   144,144.50x = 216,161.67 × 69,243.30
4. Step 4: Simplify right side
   144,144.50x = 14,967,747,364.31
5. Step 5: Solve for x
   x = 14,967,747,364.31/144,144.50
6. Step 6: Final answer
   x = 103,838.49