Finding the Fourth Proportional to 371,222.75, 512,022.72 and 340,694.22

Step by Step Solution

1. Step 1: Write the proportion equation
   371,222.75 : 512,022.72 = 340,694.22 : x
2. Step 2: Convert to fraction form
   371,222.75/512,022.72 = 340,694.22/x
3. Step 3: Cross multiply
   371,222.75x = 512,022.72 × 340,694.22
4. Step 4: Simplify right side
   371,222.75x = 174,443,180,693.88
5. Step 5: Solve for x
   x = 174,443,180,693.88/371,222.75
6. Step 6: Final answer
   x = 469,915.12