Finding the Fourth Proportional to 123,469.64, 185,185.16 and 39,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,469.64 : 185,185.16 = 39,218.72 : x
2. Step 2: Convert to fraction form
   123,469.64/185,185.16 = 39,218.72/x
3. Step 3: Cross multiply
   123,469.64x = 185,185.16 × 39,218.72
4. Step 4: Simplify right side
   123,469.64x = 7,262,723,816.18
5. Step 5: Solve for x
   x = 7,262,723,816.18/123,469.64
6. Step 6: Final answer
   x = 58,821.94