Finding the Fourth Proportional to 123,354.09, 170,231.96 and 74,939.54

Step by Step Solution

1. Step 1: Write the proportion equation
   123,354.09 : 170,231.96 = 74,939.54 : x
2. Step 2: Convert to fraction form
   123,354.09/170,231.96 = 74,939.54/x
3. Step 3: Cross multiply
   123,354.09x = 170,231.96 × 74,939.54
4. Step 4: Simplify right side
   123,354.09x = 12,757,104,111.89
5. Step 5: Solve for x
   x = 12,757,104,111.89/123,354.09
6. Step 6: Final answer
   x = 103,418.57