Finding the Fourth Proportional to 443,785.50, 612,424.02 and 242,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,785.50 : 612,424.02 = 242,581.50 : x
2. Step 2: Convert to fraction form
   443,785.50/612,424.02 = 242,581.50/x
3. Step 3: Cross multiply
   443,785.50x = 612,424.02 × 242,581.50
4. Step 4: Simplify right side
   443,785.50x = 148,562,737,407.63
5. Step 5: Solve for x
   x = 148,562,737,407.63/443,785.50
6. Step 6: Final answer
   x = 334,762.49