Finding the Fourth Proportional to 49,885.92, 74,828.72 and 20,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   49,885.92 : 74,828.72 = 20,296.72 : x
2. Step 2: Convert to fraction form
   49,885.92/74,828.72 = 20,296.72/x
3. Step 3: Cross multiply
   49,885.92x = 74,828.72 × 20,296.72
4. Step 4: Simplify right side
   49,885.92x = 1,518,777,577.80
5. Step 5: Solve for x
   x = 1,518,777,577.80/49,885.92
6. Step 6: Final answer
   x = 30,445.01