Finding the Fourth Proportional to 308,089.27, 425,171.86 and 172,138.19

Step by Step Solution

1. Step 1: Write the proportion equation
   308,089.27 : 425,171.86 = 172,138.19 : x
2. Step 2: Convert to fraction form
   308,089.27/425,171.86 = 172,138.19/x
3. Step 3: Cross multiply
   308,089.27x = 425,171.86 × 172,138.19
4. Step 4: Simplify right side
   308,089.27x = 73,188,314,419.33
5. Step 5: Solve for x
   x = 73,188,314,419.33/308,089.27
6. Step 6: Final answer
   x = 237,555.54