Finding the Fourth Proportional to 208,144.49, 287,238.89 and 112,651.25

Step by Step Solution

1. Step 1: Write the proportion equation
   208,144.49 : 287,238.89 = 112,651.25 : x
2. Step 2: Convert to fraction form
   208,144.49/287,238.89 = 112,651.25/x
3. Step 3: Cross multiply
   208,144.49x = 287,238.89 × 112,651.25
4. Step 4: Simplify right side
   208,144.49x = 32,357,818,852.55
5. Step 5: Solve for x
   x = 32,357,818,852.55/208,144.49
6. Step 6: Final answer
   x = 155,458.45