Finding the Fourth Proportional to 439,216.47, 658,766.38 and 123,697.98

Step by Step Solution

1. Step 1: Write the proportion equation
   439,216.47 : 658,766.38 = 123,697.98 : x
2. Step 2: Convert to fraction form
   439,216.47/658,766.38 = 123,697.98/x
3. Step 3: Cross multiply
   439,216.47x = 658,766.38 × 123,697.98
4. Step 4: Simplify right side
   439,216.47x = 81,488,069,879.42
5. Step 5: Solve for x
   x = 81,488,069,879.42/439,216.47
6. Step 6: Final answer
   x = 185,530.54