Finding the Fourth Proportional to 172,908.15, 238,608.50 and 96,429.57

Step by Step Solution

1. Step 1: Write the proportion equation
   172,908.15 : 238,608.50 = 96,429.57 : x
2. Step 2: Convert to fraction form
   172,908.15/238,608.50 = 96,429.57/x
3. Step 3: Cross multiply
   172,908.15x = 238,608.50 × 96,429.57
4. Step 4: Simplify right side
   172,908.15x = 23,008,914,571.20
5. Step 5: Solve for x
   x = 23,008,914,571.20/172,908.15
6. Step 6: Final answer
   x = 133,070.16