Finding the Fourth Proportional to 205,401.78, 308,081.61 and 55,636.02

Step by Step Solution

1. Step 1: Write the proportion equation
   205,401.78 : 308,081.61 = 55,636.02 : x
2. Step 2: Convert to fraction form
   205,401.78/308,081.61 = 55,636.02/x
3. Step 3: Cross multiply
   205,401.78x = 308,081.61 × 55,636.02
4. Step 4: Simplify right side
   205,401.78x = 17,140,434,615.59
5. Step 5: Solve for x
   x = 17,140,434,615.59/205,401.78
6. Step 6: Final answer
   x = 83,448.33