Finding the Fourth Proportional to 55,543.12, 83,322.59 and 20,480.05

Step by Step Solution

1. Step 1: Write the proportion equation
   55,543.12 : 83,322.59 = 20,480.05 : x
2. Step 2: Convert to fraction form
   55,543.12/83,322.59 = 20,480.05/x
3. Step 3: Cross multiply
   55,543.12x = 83,322.59 × 20,480.05
4. Step 4: Simplify right side
   55,543.12x = 1,706,450,809.33
5. Step 5: Solve for x
   x = 1,706,450,809.33/55,543.12
6. Step 6: Final answer
   x = 30,722.99