Finding the Fourth Proportional to 42,066.91, 63,086.70 and 13,979.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,066.91 : 63,086.70 = 13,979.42 : x
2. Step 2: Convert to fraction form
   42,066.91/63,086.70 = 13,979.42/x
3. Step 3: Cross multiply
   42,066.91x = 63,086.70 × 13,979.42
4. Step 4: Simplify right side
   42,066.91x = 881,915,160.28
5. Step 5: Solve for x
   x = 881,915,160.28/42,066.91
6. Step 6: Final answer
   x = 20,964.58