Finding the Fourth Proportional to 111,067.59, 153,297.87 and 76,660.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,067.59 : 153,297.87 = 76,660.62 : x
2. Step 2: Convert to fraction form
   111,067.59/153,297.87 = 76,660.62/x
3. Step 3: Cross multiply
   111,067.59x = 153,297.87 × 76,660.62
4. Step 4: Simplify right side
   111,067.59x = 11,751,909,758.88
5. Step 5: Solve for x
   x = 11,751,909,758.88/111,067.59
6. Step 6: Final answer
   x = 105,808.63