Finding the Fourth Proportional to 307,664.31, 424,598.05 and 171,724.71

Step by Step Solution

1. Step 1: Write the proportion equation
   307,664.31 : 424,598.05 = 171,724.71 : x
2. Step 2: Convert to fraction form
   307,664.31/424,598.05 = 171,724.71/x
3. Step 3: Cross multiply
   307,664.31x = 424,598.05 × 171,724.71
4. Step 4: Simplify right side
   307,664.31x = 72,913,977,002.82
5. Step 5: Solve for x
   x = 72,913,977,002.82/307,664.31
6. Step 6: Final answer
   x = 236,991.99