Finding the Fourth Proportional to 49,728.33, 74,559.69 and 20,111.49

Step by Step Solution

1. Step 1: Write the proportion equation
   49,728.33 : 74,559.69 = 20,111.49 : x
2. Step 2: Convert to fraction form
   49,728.33/74,559.69 = 20,111.49/x
3. Step 3: Cross multiply
   49,728.33x = 74,559.69 × 20,111.49
4. Step 4: Simplify right side
   49,728.33x = 1,499,506,459.84
5. Step 5: Solve for x
   x = 1,499,506,459.84/49,728.33
6. Step 6: Final answer
   x = 30,153.97