Finding the Fourth Proportional to 42,067.43, 63,087.48 and 13,979.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067.43 : 63,087.48 = 13,979.94 : x
2. Step 2: Convert to fraction form
   42,067.43/63,087.48 = 13,979.94/x
3. Step 3: Cross multiply
   42,067.43x = 63,087.48 × 13,979.94
4. Step 4: Simplify right side
   42,067.43x = 881,959,185.15
5. Step 5: Solve for x
   x = 881,959,185.15/42,067.43
6. Step 6: Final answer
   x = 20,965.37