Finding the Fourth Proportional to 109,067.80, 150,514.59 and 66,626.31

Step by Step Solution

1. Step 1: Write the proportion equation
   109,067.80 : 150,514.59 = 66,626.31 : x
2. Step 2: Convert to fraction form
   109,067.80/150,514.59 = 66,626.31/x
3. Step 3: Cross multiply
   109,067.80x = 150,514.59 × 66,626.31
4. Step 4: Simplify right side
   109,067.80x = 10,028,231,732.86
5. Step 5: Solve for x
   x = 10,028,231,732.86/109,067.80
6. Step 6: Final answer
   x = 91,944.93