Finding the Fourth Proportional to 42,620.40, 63,815.40 and 33,404.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,620.40 : 63,815.40 = 33,404.40 : x
2. Step 2: Convert to fraction form
   42,620.40/63,815.40 = 33,404.40/x
3. Step 3: Cross multiply
   42,620.40x = 63,815.40 × 33,404.40
4. Step 4: Simplify right side
   42,620.40x = 2,131,715,147.76
5. Step 5: Solve for x
   x = 2,131,715,147.76/42,620.40
6. Step 6: Final answer
   x = 50,016.31