Finding the Fourth Proportional to 172,557, 238,128.66 and 97,107.12

Step by Step Solution

1. Step 1: Write the proportion equation
   172,557 : 238,128.66 = 97,107.12 : x
2. Step 2: Convert to fraction form
   172,557/238,128.66 = 97,107.12/x
3. Step 3: Cross multiply
   172,557x = 238,128.66 × 97,107.12
4. Step 4: Simplify right side
   172,557x = 23,123,988,362.06
5. Step 5: Solve for x
   x = 23,123,988,362.06/172,557
6. Step 6: Final answer
   x = 134,007.83