Finding the Fourth Proportional to 42,789.56, 59,029.70 and 27,687.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,789.56 : 59,029.70 = 27,687.10 : x
2. Step 2: Convert to fraction form
   42,789.56/59,029.70 = 27,687.10/x
3. Step 3: Cross multiply
   42,789.56x = 59,029.70 × 27,687.10
4. Step 4: Simplify right side
   42,789.56x = 1,634,361,016.12
5. Step 5: Solve for x
   x = 1,634,361,016.12/42,789.56
6. Step 6: Final answer
   x = 38,195.32