Finding the Fourth Proportional to 205,543.72, 308,336.10 and 55,786.42

Step by Step Solution

1. Step 1: Write the proportion equation
   205,543.72 : 308,336.10 = 55,786.42 : x
2. Step 2: Convert to fraction form
   205,543.72/308,336.10 = 55,786.42/x
3. Step 3: Cross multiply
   205,543.72x = 308,336.10 × 55,786.42
4. Step 4: Simplify right side
   205,543.72x = 17,200,967,175.76
5. Step 5: Solve for x
   x = 17,200,967,175.76/205,543.72
6. Step 6: Final answer
   x = 83,685.20