Finding the Fourth Proportional to 42,259.48, 63,399.21 and 13,796.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,259.48 : 63,399.21 = 13,796.28 : x
2. Step 2: Convert to fraction form
   42,259.48/63,399.21 = 13,796.28/x
3. Step 3: Cross multiply
   42,259.48x = 63,399.21 × 13,796.28
4. Step 4: Simplify right side
   42,259.48x = 874,672,935.94
5. Step 5: Solve for x
   x = 874,672,935.94/42,259.48
6. Step 6: Final answer
   x = 20,697.68