Finding the Fourth Proportional to 49,799.10, 74,696.85 and 20,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49,799.10 : 74,696.85 = 20,216.10 : x
2. Step 2: Convert to fraction form
   49,799.10/74,696.85 = 20,216.10/x
3. Step 3: Cross multiply
   49,799.10x = 74,696.85 × 20,216.10
4. Step 4: Simplify right side
   49,799.10x = 1,510,078,989.29
5. Step 5: Solve for x
   x = 1,510,078,989.29/49,799.10
6. Step 6: Final answer
   x = 30,323.42