Finding the Fourth Proportional to 443,942, 612,639.96 and 242,738

Step by Step Solution

1. Step 1: Write the proportion equation
   443,942 : 612,639.96 = 242,738 : x
2. Step 2: Convert to fraction form
   443,942/612,639.96 = 242,738/x
3. Step 3: Cross multiply
   443,942x = 612,639.96 × 242,738
4. Step 4: Simplify right side
   443,942x = 148,710,998,610.48
5. Step 5: Solve for x
   x = 148,710,998,610.48/443,942
6. Step 6: Final answer
   x = 334,978.44