Finding the Fourth Proportional to 172,691.12, 238,222.52 and 118,882.72

Step by Step Solution

1. Step 1: Write the proportion equation
   172,691.12 : 238,222.52 = 118,882.72 : x
2. Step 2: Convert to fraction form
   172,691.12/238,222.52 = 118,882.72/x
3. Step 3: Cross multiply
   172,691.12x = 238,222.52 × 118,882.72
4. Step 4: Simplify right side
   172,691.12x = 28,320,541,142.85
5. Step 5: Solve for x
   x = 28,320,541,142.85/172,691.12
6. Step 6: Final answer
   x = 163,995.35