Finding the Fourth Proportional to 443,434.50, 611,940.42 and 242,230.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,434.50 : 611,940.42 = 242,230.50 : x
2. Step 2: Convert to fraction form
   443,434.50/611,940.42 = 242,230.50/x
3. Step 3: Cross multiply
   443,434.50x = 611,940.42 × 242,230.50
4. Step 4: Simplify right side
   443,434.50x = 148,230,633,906.81
5. Step 5: Solve for x
   x = 148,230,633,906.81/443,434.50
6. Step 6: Final answer
   x = 334,278.53