Finding the Fourth Proportional to 256,616.69, 384,900.29 and 79,076.03

Step by Step Solution

1. Step 1: Write the proportion equation
   256,616.69 : 384,900.29 = 79,076.03 : x
2. Step 2: Convert to fraction form
   256,616.69/384,900.29 = 79,076.03/x
3. Step 3: Cross multiply
   256,616.69x = 384,900.29 × 79,076.03
4. Step 4: Simplify right side
   256,616.69x = 30,436,384,559.17
5. Step 5: Solve for x
   x = 30,436,384,559.17/256,616.69
6. Step 6: Final answer
   x = 118,606.41