Finding the Fourth Proportional to 49,920.71, 74,861.42 and 20,327.83

Step by Step Solution

1. Step 1: Write the proportion equation
   49,920.71 : 74,861.42 = 20,327.83 : x
2. Step 2: Convert to fraction form
   49,920.71/74,861.42 = 20,327.83/x
3. Step 3: Cross multiply
   49,920.71x = 74,861.42 × 20,327.83
4. Step 4: Simplify right side
   49,920.71x = 1,521,769,930.53
5. Step 5: Solve for x
   x = 1,521,769,930.53/49,920.71
6. Step 6: Final answer
   x = 30,483.74