Finding the Fourth Proportional to 35,806.61, 49,419.59 and 20,697.18

Step by Step Solution

1. Step 1: Write the proportion equation
   35,806.61 : 49,419.59 = 20,697.18 : x
2. Step 2: Convert to fraction form
   35,806.61/49,419.59 = 20,697.18/x
3. Step 3: Cross multiply
   35,806.61x = 49,419.59 × 20,697.18
4. Step 4: Simplify right side
   35,806.61x = 1,022,846,046.27
5. Step 5: Solve for x
   x = 1,022,846,046.27/35,806.61
6. Step 6: Final answer
   x = 28,565.85