Finding the Fourth Proportional to 347,200.50, 479,139.57 and 188,224.50

Step by Step Solution

1. Step 1: Write the proportion equation
   347,200.50 : 479,139.57 = 188,224.50 : x
2. Step 2: Convert to fraction form
   347,200.50/479,139.57 = 188,224.50/x
3. Step 3: Cross multiply
   347,200.50x = 479,139.57 × 188,224.50
4. Step 4: Simplify right side
   347,200.50x = 90,185,805,993.47
5. Step 5: Solve for x
   x = 90,185,805,993.47/347,200.50
6. Step 6: Final answer
   x = 259,751.37