Finding the Fourth Proportional to 205,797.69, 308,665.32 and 56,049.78

Step by Step Solution

1. Step 1: Write the proportion equation
   205,797.69 : 308,665.32 = 56,049.78 : x
2. Step 2: Convert to fraction form
   205,797.69/308,665.32 = 56,049.78/x
3. Step 3: Cross multiply
   205,797.69x = 308,665.32 × 56,049.78
4. Step 4: Simplify right side
   205,797.69x = 17,300,623,279.63
5. Step 5: Solve for x
   x = 17,300,623,279.63/205,797.69
6. Step 6: Final answer
   x = 84,066.17