Finding the Fourth Proportional to 55,723.42, 83,584.83 and 13,603.73

Step by Step Solution

1. Step 1: Write the proportion equation
   55,723.42 : 83,584.83 = 13,603.73 : x
2. Step 2: Convert to fraction form
   55,723.42/83,584.83 = 13,603.73/x
3. Step 3: Cross multiply
   55,723.42x = 83,584.83 × 13,603.73
4. Step 4: Simplify right side
   55,723.42x = 1,137,065,092.51
5. Step 5: Solve for x
   x = 1,137,065,092.51/55,723.42
6. Step 6: Final answer
   x = 20,405.51