Finding the Fourth Proportional to 405,827, 560,043.18 and 226,979

Step by Step Solution

1. Step 1: Write the proportion equation
   405,827 : 560,043.18 = 226,979 : x
2. Step 2: Convert to fraction form
   405,827/560,043.18 = 226,979/x
3. Step 3: Cross multiply
   405,827x = 560,043.18 × 226,979
4. Step 4: Simplify right side
   405,827x = 127,118,040,953.22
5. Step 5: Solve for x
   x = 127,118,040,953.22/405,827
6. Step 6: Final answer
   x = 313,232.09