Finding the Fourth Proportional to 49,698.72, 74,546.04 and 20,116.80

Step by Step Solution

1. Step 1: Write the proportion equation
   49,698.72 : 74,546.04 = 20,116.80 : x
2. Step 2: Convert to fraction form
   49,698.72/74,546.04 = 20,116.80/x
3. Step 3: Cross multiply
   49,698.72x = 74,546.04 × 20,116.80
4. Step 4: Simplify right side
   49,698.72x = 1,499,627,777.47
5. Step 5: Solve for x
   x = 1,499,627,777.47/49,698.72
6. Step 6: Final answer
   x = 30,174.37