Finding the Fourth Proportional to 55,743.78, 83,615.34 and 13,624.08

Step by Step Solution

1. Step 1: Write the proportion equation
   55,743.78 : 83,615.34 = 13,624.08 : x
2. Step 2: Convert to fraction form
   55,743.78/83,615.34 = 13,624.08/x
3. Step 3: Cross multiply
   55,743.78x = 83,615.34 × 13,624.08
4. Step 4: Simplify right side
   55,743.78x = 1,139,182,081.39
5. Step 5: Solve for x
   x = 1,139,182,081.39/55,743.78
6. Step 6: Final answer
   x = 20,436.04