Finding the Fourth Proportional to 202,287.27, 279,156.17 and 111,643.31

Step by Step Solution

1. Step 1: Write the proportion equation
   202,287.27 : 279,156.17 = 111,643.31 : x
2. Step 2: Convert to fraction form
   202,287.27/279,156.17 = 111,643.31/x
3. Step 3: Cross multiply
   202,287.27x = 279,156.17 × 111,643.31
4. Step 4: Simplify right side
   202,287.27x = 31,165,919,802.72
5. Step 5: Solve for x
   x = 31,165,919,802.72/202,287.27
6. Step 6: Final answer
   x = 154,067.62