Finding the Fourth Proportional to 404,387.31, 606,559.08 and 123,905.37

Step by Step Solution

1. Step 1: Write the proportion equation
   404,387.31 : 606,559.08 = 123,905.37 : x
2. Step 2: Convert to fraction form
   404,387.31/606,559.08 = 123,905.37/x
3. Step 3: Cross multiply
   404,387.31x = 606,559.08 × 123,905.37
4. Step 4: Simplify right side
   404,387.31x = 75,155,927,234.26
5. Step 5: Solve for x
   x = 75,155,927,234.26/404,387.31
6. Step 6: Final answer
   x = 185,851.35