Finding the Fourth Proportional to 35,559.14, 49,069.72 and 20,449.40

Step by Step Solution

1. Step 1: Write the proportion equation
   35,559.14 : 49,069.72 = 20,449.40 : x
2. Step 2: Convert to fraction form
   35,559.14/49,069.72 = 20,449.40/x
3. Step 3: Cross multiply
   35,559.14x = 49,069.72 × 20,449.40
4. Step 4: Simplify right side
   35,559.14x = 1,003,446,403.72
5. Step 5: Solve for x
   x = 1,003,446,403.72/35,559.14
6. Step 6: Final answer
   x = 28,219.08