Finding the Fourth Proportional to 442,620.72, 663,930.72 and 162,159.84

Step by Step Solution

1. Step 1: Write the proportion equation
   442,620.72 : 663,930.72 = 162,159.84 : x
2. Step 2: Convert to fraction form
   442,620.72/663,930.72 = 162,159.84/x
3. Step 3: Cross multiply
   442,620.72x = 663,930.72 × 162,159.84
4. Step 4: Simplify right side
   442,620.72x = 107,662,899,326.29
5. Step 5: Solve for x
   x = 107,662,899,326.29/442,620.72
6. Step 6: Final answer
   x = 243,239.63