Finding the Fourth Proportional to 42,398.93, 63,604.89 and 13,926.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,398.93 : 63,604.89 = 13,926.94 : x
2. Step 2: Convert to fraction form
   42,398.93/63,604.89 = 13,926.94/x
3. Step 3: Cross multiply
   42,398.93x = 63,604.89 × 13,926.94
4. Step 4: Simplify right side
   42,398.93x = 885,821,327.72
5. Step 5: Solve for x
   x = 885,821,327.72/42,398.93
6. Step 6: Final answer
   x = 20,892.54