Finding the Fourth Proportional to 54,978.01, 82,467.21 and 13,425.01

Step by Step Solution

1. Step 1: Write the proportion equation
   54,978.01 : 82,467.21 = 13,425.01 : x
2. Step 2: Convert to fraction form
   54,978.01/82,467.21 = 13,425.01/x
3. Step 3: Cross multiply
   54,978.01x = 82,467.21 × 13,425.01
4. Step 4: Simplify right side
   54,978.01x = 1,107,123,118.92
5. Step 5: Solve for x
   x = 1,107,123,118.92/54,978.01
6. Step 6: Final answer
   x = 20,137.56