Finding the Fourth Proportional to 42,067.05, 63,086.92 and 13,979.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067.05 : 63,086.92 = 13,979.56 : x
2. Step 2: Convert to fraction form
   42,067.05/63,086.92 = 13,979.56/x
3. Step 3: Cross multiply
   42,067.05x = 63,086.92 × 13,979.56
4. Step 4: Simplify right side
   42,067.05x = 881,927,383.36
5. Step 5: Solve for x
   x = 881,927,383.36/42,067.05
6. Step 6: Final answer
   x = 20,964.80