Finding the Fourth Proportional to 308,164.30, 425,258.56 and 172,199.37

Step by Step Solution

1. Step 1: Write the proportion equation
   308,164.30 : 425,258.56 = 172,199.37 : x
2. Step 2: Convert to fraction form
   308,164.30/425,258.56 = 172,199.37/x
3. Step 3: Cross multiply
   308,164.30x = 425,258.56 × 172,199.37
4. Step 4: Simplify right side
   308,164.30x = 73,229,256,021.31
5. Step 5: Solve for x
   x = 73,229,256,021.31/308,164.30
6. Step 6: Final answer
   x = 237,630.56