Finding the Fourth Proportional to 79,012.91, 109,067.46 and 51,790.75

Step by Step Solution

1. Step 1: Write the proportion equation
   79,012.91 : 109,067.46 = 51,790.75 : x
2. Step 2: Convert to fraction form
   79,012.91/109,067.46 = 51,790.75/x
3. Step 3: Cross multiply
   79,012.91x = 109,067.46 × 51,790.75
4. Step 4: Simplify right side
   79,012.91x = 5,648,685,554.00
5. Step 5: Solve for x
   x = 5,648,685,554.00/79,012.91
6. Step 6: Final answer
   x = 71,490.67