Finding the Fourth Proportional to 443,662.72, 612,253.20 and 242,458.72

Step by Step Solution

1. Step 1: Write the proportion equation
   443,662.72 : 612,253.20 = 242,458.72 : x
2. Step 2: Convert to fraction form
   443,662.72/612,253.20 = 242,458.72/x
3. Step 3: Cross multiply
   443,662.72x = 612,253.20 × 242,458.72
4. Step 4: Simplify right side
   443,662.72x = 148,446,127,187.90
5. Step 5: Solve for x
   x = 148,446,127,187.90/443,662.72
6. Step 6: Final answer
   x = 334,592.29