Finding the Fourth Proportional to 308,196.47, 425,309.88 and 172,230.38

Step by Step Solution

1. Step 1: Write the proportion equation
   308,196.47 : 425,309.88 = 172,230.38 : x
2. Step 2: Convert to fraction form
   308,196.47/425,309.88 = 172,230.38/x
3. Step 3: Cross multiply
   308,196.47x = 425,309.88 × 172,230.38
4. Step 4: Simplify right side
   308,196.47x = 73,251,282,250.15
5. Step 5: Solve for x
   x = 73,251,282,250.15/308,196.47
6. Step 6: Final answer
   x = 237,677.23