Finding the Fourth Proportional to 307,212, 423,952.56 and 165,900

Step by Step Solution

1. Step 1: Write the proportion equation
   307,212 : 423,952.56 = 165,900 : x
2. Step 2: Convert to fraction form
   307,212/423,952.56 = 165,900/x
3. Step 3: Cross multiply
   307,212x = 423,952.56 × 165,900
4. Step 4: Simplify right side
   307,212x = 70,333,729,704
5. Step 5: Solve for x
   x = 70,333,729,704/307,212
6. Step 6: Final answer
   x = 228,942