Finding the Fourth Proportional to 443,694.72, 612,298.72 and 242,490.72

Step by Step Solution

1. Step 1: Write the proportion equation
   443,694.72 : 612,298.72 = 242,490.72 : x
2. Step 2: Convert to fraction form
   443,694.72/612,298.72 = 242,490.72/x
3. Step 3: Cross multiply
   443,694.72x = 612,298.72 × 242,490.72
4. Step 4: Simplify right side
   443,694.72x = 148,476,757,467.88
5. Step 5: Solve for x
   x = 148,476,757,467.88/443,694.72
6. Step 6: Final answer
   x = 334,637.20