Finding the Fourth Proportional to 49,405, 74,128.04 and 19,843.80

Step by Step Solution

1. Step 1: Write the proportion equation
   49,405 : 74,128.04 = 19,843.80 : x
2. Step 2: Convert to fraction form
   49,405/74,128.04 = 19,843.80/x
3. Step 3: Cross multiply
   49,405x = 74,128.04 × 19,843.80
4. Step 4: Simplify right side
   49,405x = 1,470,982,000.15
5. Step 5: Solve for x
   x = 1,470,982,000.15/49,405
6. Step 6: Final answer
   x = 29,773.95