Finding the Fourth Proportional to 123,490.24, 185,145.45 and 39,222.70

Step by Step Solution

1. Step 1: Write the proportion equation
   123,490.24 : 185,145.45 = 39,222.70 : x
2. Step 2: Convert to fraction form
   123,490.24/185,145.45 = 39,222.70/x
3. Step 3: Cross multiply
   123,490.24x = 185,145.45 × 39,222.70
4. Step 4: Simplify right side
   123,490.24x = 7,261,904,441.72
5. Step 5: Solve for x
   x = 7,261,904,441.72/123,490.24
6. Step 6: Final answer
   x = 58,805.49