Finding the Fourth Proportional to 237,404.09, 327,616.57 and 128,508.50

Step by Step Solution

1. Step 1: Write the proportion equation
   237,404.09 : 327,616.57 = 128,508.50 : x
2. Step 2: Convert to fraction form
   237,404.09/327,616.57 = 128,508.50/x
3. Step 3: Cross multiply
   237,404.09x = 327,616.57 × 128,508.50
4. Step 4: Simplify right side
   237,404.09x = 42,101,513,985.85
5. Step 5: Solve for x
   x = 42,101,513,985.85/237,404.09
6. Step 6: Final answer
   x = 177,341.15