Finding the Fourth Proportional to 35,540.05, 49,048.16 and 20,437.60

Step by Step Solution

1. Step 1: Write the proportion equation
   35,540.05 : 49,048.16 = 20,437.60 : x
2. Step 2: Convert to fraction form
   35,540.05/49,048.16 = 20,437.60/x
3. Step 3: Cross multiply
   35,540.05x = 49,048.16 × 20,437.60
4. Step 4: Simplify right side
   35,540.05x = 1,002,426,674.82
5. Step 5: Solve for x
   x = 1,002,426,674.82/35,540.05
6. Step 6: Final answer
   x = 28,205.55