Finding the Fourth Proportional to 55,158.37, 82,721.10 and 20,089.82

Step by Step Solution

1. Step 1: Write the proportion equation
   55,158.37 : 82,721.10 = 20,089.82 : x
2. Step 2: Convert to fraction form
   55,158.37/82,721.10 = 20,089.82/x
3. Step 3: Cross multiply
   55,158.37x = 82,721.10 × 20,089.82
4. Step 4: Simplify right side
   55,158.37x = 1,661,852,009.20
5. Step 5: Solve for x
   x = 1,661,852,009.20/55,158.37
6. Step 6: Final answer
   x = 30,128.74