Finding the Fourth Proportional to 307,449, 424,279.62 and 173,313

Step by Step Solution

1. Step 1: Write the proportion equation
   307,449 : 424,279.62 = 173,313 : x
2. Step 2: Convert to fraction form
   307,449/424,279.62 = 173,313/x
3. Step 3: Cross multiply
   307,449x = 424,279.62 × 173,313
4. Step 4: Simplify right side
   307,449x = 73,533,173,781.06
5. Step 5: Solve for x
   x = 73,533,173,781.06/307,449
6. Step 6: Final answer
   x = 239,171.94