Finding the Fourth Proportional to 35,581.92, 49,109.04 and 20,686.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,581.92 : 49,109.04 = 20,686.56 : x
2. Step 2: Convert to fraction form
   35,581.92/49,109.04 = 20,686.56/x
3. Step 3: Cross multiply
   35,581.92x = 49,109.04 × 20,686.56
4. Step 4: Simplify right side
   35,581.92x = 1,015,897,102.50
5. Step 5: Solve for x
   x = 1,015,897,102.50/35,581.92
6. Step 6: Final answer
   x = 28,550.94