Finding the Fourth Proportional to 196,561.16, 271,175.58 and 123,940.16

Step by Step Solution

1. Step 1: Write the proportion equation
   196,561.16 : 271,175.58 = 123,940.16 : x
2. Step 2: Convert to fraction form
   196,561.16/271,175.58 = 123,940.16/x
3. Step 3: Cross multiply
   196,561.16x = 271,175.58 × 123,940.16
4. Step 4: Simplify right side
   196,561.16x = 33,609,544,773.29
5. Step 5: Solve for x
   x = 33,609,544,773.29/196,561.16
6. Step 6: Final answer
   x = 170,987.72