Finding the Fourth Proportional to 308,463.50, 425,676.71 and 172,495.89

Step by Step Solution

1. Step 1: Write the proportion equation
   308,463.50 : 425,676.71 = 172,495.89 : x
2. Step 2: Convert to fraction form
   308,463.50/425,676.71 = 172,495.89/x
3. Step 3: Cross multiply
   308,463.50x = 425,676.71 × 172,495.89
4. Step 4: Simplify right side
   308,463.50x = 73,427,482,081.24
5. Step 5: Solve for x
   x = 73,427,482,081.24/308,463.50
6. Step 6: Final answer
   x = 238,042.70