Finding the Fourth Proportional to 231,915.10, 320,196.36 and 178,103.56

Step by Step Solution

1. Step 1: Write the proportion equation
   231,915.10 : 320,196.36 = 178,103.56 : x
2. Step 2: Convert to fraction form
   231,915.10/320,196.36 = 178,103.56/x
3. Step 3: Cross multiply
   231,915.10x = 320,196.36 × 178,103.56
4. Step 4: Simplify right side
   231,915.10x = 57,028,111,615.04
5. Step 5: Solve for x
   x = 57,028,111,615.04/231,915.10
6. Step 6: Final answer
   x = 245,900.81