Finding the Fourth Proportional to 237,282.29, 327,448.69 and 128,386.30

Step by Step Solution

1. Step 1: Write the proportion equation
   237,282.29 : 327,448.69 = 128,386.30 : x
2. Step 2: Convert to fraction form
   237,282.29/327,448.69 = 128,386.30/x
3. Step 3: Cross multiply
   237,282.29x = 327,448.69 × 128,386.30
4. Step 4: Simplify right side
   237,282.29x = 42,039,925,945.50
5. Step 5: Solve for x
   x = 42,039,925,945.50/237,282.29
6. Step 6: Final answer
   x = 177,172.62