Finding the Fourth Proportional to 42,632.86, 63,894.56 and 20,412.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,632.86 : 63,894.56 = 20,412.94 : x
2. Step 2: Convert to fraction form
   42,632.86/63,894.56 = 20,412.94/x
3. Step 3: Cross multiply
   42,632.86x = 63,894.56 × 20,412.94
4. Step 4: Simplify right side
   42,632.86x = 1,304,275,819.61
5. Step 5: Solve for x
   x = 1,304,275,819.61/42,632.86
6. Step 6: Final answer
   x = 30,593.20