Finding the Fourth Proportional to 308,022.72, 425,072.83 and 172,062.40

Step by Step Solution

1. Step 1: Write the proportion equation
   308,022.72 : 425,072.83 = 172,062.40 : x
2. Step 2: Convert to fraction form
   308,022.72/425,072.83 = 172,062.40/x
3. Step 3: Cross multiply
   308,022.72x = 425,072.83 × 172,062.40
4. Step 4: Simplify right side
   308,022.72x = 73,139,051,304.59
5. Step 5: Solve for x
   x = 73,139,051,304.59/308,022.72
6. Step 6: Final answer
   x = 237,446.94