Finding the Fourth Proportional to 111,579.19, 153,993.32 and 69,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,579.19 : 153,993.32 = 69,144.10 : x
2. Step 2: Convert to fraction form
   111,579.19/153,993.32 = 69,144.10/x
3. Step 3: Cross multiply
   111,579.19x = 153,993.32 × 69,144.10
4. Step 4: Simplify right side
   111,579.19x = 10,647,729,046.00
5. Step 5: Solve for x
   x = 10,647,729,046.00/111,579.19
6. Step 6: Final answer
   x = 95,427.55