Finding the Fourth Proportional to 354,111.30, 488,673.60 and 192,966.30

Step by Step Solution

1. Step 1: Write the proportion equation
   354,111.30 : 488,673.60 = 192,966.30 : x
2. Step 2: Convert to fraction form
   354,111.30/488,673.60 = 192,966.30/x
3. Step 3: Cross multiply
   354,111.30x = 488,673.60 × 192,966.30
4. Step 4: Simplify right side
   354,111.30x = 94,297,536,499.68
5. Step 5: Solve for x
   x = 94,297,536,499.68/354,111.30
6. Step 6: Final answer
   x = 266,293.50