Finding the Fourth Proportional to 42,016.40, 58,745.20 and 42,016.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,016.40 : 58,745.20 = 42,016.40 : x
2. Step 2: Convert to fraction form
   42,016.40/58,745.20 = 42,016.40/x
3. Step 3: Cross multiply
   42,016.40x = 58,745.20 × 42,016.40
4. Step 4: Simplify right side
   42,016.40x = 2,468,261,821.28
5. Step 5: Solve for x
   x = 2,468,261,821.28/42,016.40
6. Step 6: Final answer
   x = 58,745.20