Finding the Fourth Proportional to 144,391.51, 216,406.69 and 69,491.62

Step by Step Solution

1. Step 1: Write the proportion equation
   144,391.51 : 216,406.69 = 69,491.62 : x
2. Step 2: Convert to fraction form
   144,391.51/216,406.69 = 69,491.62/x
3. Step 3: Cross multiply
   144,391.51x = 216,406.69 × 69,491.62
4. Step 4: Simplify right side
   144,391.51x = 15,038,451,563.72
5. Step 5: Solve for x
   x = 15,038,451,563.72/144,391.51
6. Step 6: Final answer
   x = 104,150.52