Finding the Fourth Proportional to 123,360.09, 170,240.24 and 74,945.54

Step by Step Solution

1. Step 1: Write the proportion equation
   123,360.09 : 170,240.24 = 74,945.54 : x
2. Step 2: Convert to fraction form
   123,360.09/170,240.24 = 74,945.54/x
3. Step 3: Cross multiply
   123,360.09x = 170,240.24 × 74,945.54
4. Step 4: Simplify right side
   123,360.09x = 12,758,746,052.69
5. Step 5: Solve for x
   x = 12,758,746,052.69/123,360.09
6. Step 6: Final answer
   x = 103,426.85