Finding the Fourth Proportional to 208,243.31, 287,375.78 and 112,749.98

Step by Step Solution

1. Step 1: Write the proportion equation
   208,243.31 : 287,375.78 = 112,749.98 : x
2. Step 2: Convert to fraction form
   208,243.31/287,375.78 = 112,749.98/x
3. Step 3: Cross multiply
   208,243.31x = 287,375.78 × 112,749.98
4. Step 4: Simplify right side
   208,243.31x = 32,401,612,292.48
5. Step 5: Solve for x
   x = 32,401,612,292.48/208,243.31
6. Step 6: Final answer
   x = 155,594.98