Finding the Fourth Proportional to 113,665.78, 170,505.51 and 34,780.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,665.78 : 170,505.51 = 34,780.69 : x
2. Step 2: Convert to fraction form
   113,665.78/170,505.51 = 34,780.69/x
3. Step 3: Cross multiply
   113,665.78x = 170,505.51 × 34,780.69
4. Step 4: Simplify right side
   113,665.78x = 5,930,299,369.31
5. Step 5: Solve for x
   x = 5,930,299,369.31/113,665.78
6. Step 6: Final answer
   x = 52,173.13