Finding the Fourth Proportional to 207,997.82, 287,012.31 and 117,348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,997.82 : 287,012.31 = 117,348.50 : x
2. Step 2: Convert to fraction form
   207,997.82/287,012.31 = 117,348.50/x
3. Step 3: Cross multiply
   207,997.82x = 287,012.31 × 117,348.50
4. Step 4: Simplify right side
   207,997.82x = 33,680,463,383.15
5. Step 5: Solve for x
   x = 33,680,463,383.15/207,997.82
6. Step 6: Final answer
   x = 161,927.00