Finding the Fourth Proportional to 36,161, 49,907.16 and 21,821.56

Step by Step Solution

1. Step 1: Write the proportion equation
   36,161 : 49,907.16 = 21,821.56 : x
2. Step 2: Convert to fraction form
   36,161/49,907.16 = 21,821.56/x
3. Step 3: Cross multiply
   36,161x = 49,907.16 × 21,821.56
4. Step 4: Simplify right side
   36,161x = 1,089,052,086.37
5. Step 5: Solve for x
   x = 1,089,052,086.37/36,161
6. Step 6: Final answer
   x = 30,116.76