Finding the Fourth Proportional to 245,097.50, 338,215.10 and 137,663.96

Step by Step Solution

1. Step 1: Write the proportion equation
   245,097.50 : 338,215.10 = 137,663.96 : x
2. Step 2: Convert to fraction form
   245,097.50/338,215.10 = 137,663.96/x
3. Step 3: Cross multiply
   245,097.50x = 338,215.10 × 137,663.96
4. Step 4: Simplify right side
   245,097.50x = 46,560,027,618.40
5. Step 5: Solve for x
   x = 46,560,027,618.40/245,097.50
6. Step 6: Final answer
   x = 189,965.33