Finding the Fourth Proportional to 353,196.02, 486,586.78 and 245,579.22

Step by Step Solution

1. Step 1: Write the proportion equation
   353,196.02 : 486,586.78 = 245,579.22 : x
2. Step 2: Convert to fraction form
   353,196.02/486,586.78 = 245,579.22/x
3. Step 3: Cross multiply
   353,196.02x = 486,586.78 × 245,579.22
4. Step 4: Simplify right side
   353,196.02x = 119,495,601,280.76
5. Step 5: Solve for x
   x = 119,495,601,280.76/353,196.02
6. Step 6: Final answer
   x = 338,326.58