Finding the Fourth Proportional to 443,919.25, 612,608.57 and 242,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   443,919.25 : 612,608.57 = 242,715.25 : x
2. Step 2: Convert to fraction form
   443,919.25/612,608.57 = 242,715.25/x
3. Step 3: Cross multiply
   443,919.25x = 612,608.57 × 242,715.25
4. Step 4: Simplify right side
   443,919.25x = 148,689,442,219.69
5. Step 5: Solve for x
   x = 148,689,442,219.69/443,919.25
6. Step 6: Final answer
   x = 334,947.05