Finding the Fourth Proportional to 443,209.50, 611,630.76 and 242,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,209.50 : 611,630.76 = 242,005.50 : x
2. Step 2: Convert to fraction form
   443,209.50/611,630.76 = 242,005.50/x
3. Step 3: Cross multiply
   443,209.50x = 611,630.76 × 242,005.50
4. Step 4: Simplify right side
   443,209.50x = 148,018,007,889.18
5. Step 5: Solve for x
   x = 148,018,007,889.18/443,209.50
6. Step 6: Final answer
   x = 333,968.49