Finding the Fourth Proportional to 55,839.96, 83,774.52 and 18,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,839.96 : 83,774.52 = 18,405.72 : x
2. Step 2: Convert to fraction form
   55,839.96/83,774.52 = 18,405.72/x
3. Step 3: Cross multiply
   55,839.96x = 83,774.52 × 18,405.72
4. Step 4: Simplify right side
   55,839.96x = 1,541,930,358.25
5. Step 5: Solve for x
   x = 1,541,930,358.25/55,839.96
6. Step 6: Final answer
   x = 27,613.39