Finding the Fourth Proportional to 406,978.60, 610,046.70 and 182,446.60

Step by Step Solution

1. Step 1: Write the proportion equation
   406,978.60 : 610,046.70 = 182,446.60 : x
2. Step 2: Convert to fraction form
   406,978.60/610,046.70 = 182,446.60/x
3. Step 3: Cross multiply
   406,978.60x = 610,046.70 × 182,446.60
4. Step 4: Simplify right side
   406,978.60x = 111,300,946,256.22
5. Step 5: Solve for x
   x = 111,300,946,256.22/406,978.60
6. Step 6: Final answer
   x = 273,481.08