Finding the Fourth Proportional to 307,057.31, 423,732.70 and 171,090.71

Step by Step Solution

1. Step 1: Write the proportion equation
   307,057.31 : 423,732.70 = 171,090.71 : x
2. Step 2: Convert to fraction form
   307,057.31/423,732.70 = 171,090.71/x
3. Step 3: Cross multiply
   307,057.31x = 423,732.70 × 171,090.71
4. Step 4: Simplify right side
   307,057.31x = 72,496,728,493.22
5. Step 5: Solve for x
   x = 72,496,728,493.22/307,057.31
6. Step 6: Final answer
   x = 236,101.62