Finding the Fourth Proportional to 79,067.78, 109,080.69 and 51,836.42

Step by Step Solution

1. Step 1: Write the proportion equation
   79,067.78 : 109,080.69 = 51,836.42 : x
2. Step 2: Convert to fraction form
   79,067.78/109,080.69 = 51,836.42/x
3. Step 3: Cross multiply
   79,067.78x = 109,080.69 × 51,836.42
4. Step 4: Simplify right side
   79,067.78x = 5,654,352,460.73
5. Step 5: Solve for x
   x = 5,654,352,460.73/79,067.78
6. Step 6: Final answer
   x = 71,512.73