Finding the Fourth Proportional to 72,789.88, 108,958.82 and 39,427.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,789.88 : 108,958.82 = 39,427.08 : x
2. Step 2: Convert to fraction form
   72,789.88/108,958.82 = 39,427.08/x
3. Step 3: Cross multiply
   72,789.88x = 108,958.82 × 39,427.08
4. Step 4: Simplify right side
   72,789.88x = 4,295,928,112.85
5. Step 5: Solve for x
   x = 4,295,928,112.85/72,789.88
6. Step 6: Final answer
   x = 59,018.21