Finding the Fourth Proportional to 443,919, 612,608.22 and 242,715

Step by Step Solution

1. Step 1: Write the proportion equation
   443,919 : 612,608.22 = 242,715 : x
2. Step 2: Convert to fraction form
   443,919/612,608.22 = 242,715/x
3. Step 3: Cross multiply
   443,919x = 612,608.22 × 242,715
4. Step 4: Simplify right side
   443,919x = 148,689,204,117.30
5. Step 5: Solve for x
   x = 148,689,204,117.30/443,919
6. Step 6: Final answer
   x = 334,946.70