Finding the Fourth Proportional to 35,974.40, 49,632.59 and 20,861.55

Step by Step Solution

1. Step 1: Write the proportion equation
   35,974.40 : 49,632.59 = 20,861.55 : x
2. Step 2: Convert to fraction form
   35,974.40/49,632.59 = 20,861.55/x
3. Step 3: Cross multiply
   35,974.40x = 49,632.59 × 20,861.55
4. Step 4: Simplify right side
   35,974.40x = 1,035,412,692.72
5. Step 5: Solve for x
   x = 1,035,412,692.72/35,974.40
6. Step 6: Final answer
   x = 28,781.93