Finding the Fourth Proportional to 42,012.20, 63,005.24 and 13,925.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.20 : 63,005.24 = 13,925.96 : x
2. Step 2: Convert to fraction form
   42,012.20/63,005.24 = 13,925.96/x
3. Step 3: Cross multiply
   42,012.20x = 63,005.24 × 13,925.96
4. Step 4: Simplify right side
   42,012.20x = 877,408,067.37
5. Step 5: Solve for x
   x = 877,408,067.37/42,012.20
6. Step 6: Final answer
   x = 20,884.60