Finding the Fourth Proportional to 647,514.24, 971,105.69 and 191,999

Step by Step Solution

1. Step 1: Write the proportion equation
   647,514.24 : 971,105.69 = 191,999 : x
2. Step 2: Convert to fraction form
   647,514.24/971,105.69 = 191,999/x
3. Step 3: Cross multiply
   647,514.24x = 971,105.69 × 191,999
4. Step 4: Simplify right side
   647,514.24x = 186,451,321,374.31
5. Step 5: Solve for x
   x = 186,451,321,374.31/647,514.24
6. Step 6: Final answer
   x = 287,949.38