Finding the Fourth Proportional to 443,880, 612,564.12 and 242,676

Step by Step Solution

1. Step 1: Write the proportion equation
   443,880 : 612,564.12 = 242,676 : x
2. Step 2: Convert to fraction form
   443,880/612,564.12 = 242,676/x
3. Step 3: Cross multiply
   443,880x = 612,564.12 × 242,676
4. Step 4: Simplify right side
   443,880x = 148,654,610,385.12
5. Step 5: Solve for x
   x = 148,654,610,385.12/443,880
6. Step 6: Final answer
   x = 334,898.19