Finding the Fourth Proportional to 340,722.47, 470,200.12 and 187,766.15

Step by Step Solution

1. Step 1: Write the proportion equation
   340,722.47 : 470,200.12 = 187,766.15 : x
2. Step 2: Convert to fraction form
   340,722.47/470,200.12 = 187,766.15/x
3. Step 3: Cross multiply
   340,722.47x = 470,200.12 × 187,766.15
4. Step 4: Simplify right side
   340,722.47x = 88,287,663,441.52
5. Step 5: Solve for x
   x = 88,287,663,441.52/340,722.47
6. Step 6: Final answer
   x = 259,118.99