Finding the Fourth Proportional to 172,721.94, 238,373.55 and 101,097.78

Step by Step Solution

1. Step 1: Write the proportion equation
   172,721.94 : 238,373.55 = 101,097.78 : x
2. Step 2: Convert to fraction form
   172,721.94/238,373.55 = 101,097.78/x
3. Step 3: Cross multiply
   172,721.94x = 238,373.55 × 101,097.78
4. Step 4: Simplify right side
   172,721.94x = 24,099,036,715.72
5. Step 5: Solve for x
   x = 24,099,036,715.72/172,721.94
6. Step 6: Final answer
   x = 139,525.05