Finding the Fourth Proportional to 35,679, 49,225.98 and 20,569.74

Step by Step Solution

1. Step 1: Write the proportion equation
   35,679 : 49,225.98 = 20,569.74 : x
2. Step 2: Convert to fraction form
   35,679/49,225.98 = 20,569.74/x
3. Step 3: Cross multiply
   35,679x = 49,225.98 × 20,569.74
4. Step 4: Simplify right side
   35,679x = 1,012,565,609.85
5. Step 5: Solve for x
   x = 1,012,565,609.85/35,679
6. Step 6: Final answer
   x = 28,379.88