Finding the Fourth Proportional to 208,819.82, 288,171.50 and 113,326.49

Step by Step Solution

1. Step 1: Write the proportion equation
   208,819.82 : 288,171.50 = 113,326.49 : x
2. Step 2: Convert to fraction form
   208,819.82/288,171.50 = 113,326.49/x
3. Step 3: Cross multiply
   208,819.82x = 288,171.50 × 113,326.49
4. Step 4: Simplify right side
   208,819.82x = 32,657,462,605.55
5. Step 5: Solve for x
   x = 32,657,462,605.55/208,819.82
6. Step 6: Final answer
   x = 156,390.63