Finding the Fourth Proportional to 406,417.70, 609,972.15 and 182,123.30

Step by Step Solution

1. Step 1: Write the proportion equation
   406,417.70 : 609,972.15 = 182,123.30 : x
2. Step 2: Convert to fraction form
   406,417.70/609,972.15 = 182,123.30/x
3. Step 3: Cross multiply
   406,417.70x = 609,972.15 × 182,123.30
4. Step 4: Simplify right side
   406,417.70x = 111,090,140,866.10
5. Step 5: Solve for x
   x = 111,090,140,866.10/406,417.70
6. Step 6: Final answer
   x = 273,339.82