Finding the Fourth Proportional to 36,686.28, 55,061.82 and 20,061.48

Step by Step Solution

1. Step 1: Write the proportion equation
   36,686.28 : 55,061.82 = 20,061.48 : x
2. Step 2: Convert to fraction form
   36,686.28/55,061.82 = 20,061.48/x
3. Step 3: Cross multiply
   36,686.28x = 55,061.82 × 20,061.48
4. Step 4: Simplify right side
   36,686.28x = 1,104,621,600.69
5. Step 5: Solve for x
   x = 1,104,621,600.69/36,686.28
6. Step 6: Final answer
   x = 30,109.94