Finding the Fourth Proportional to 172,323.65, 237,771.42 and 100,689.83

Step by Step Solution

1. Step 1: Write the proportion equation
   172,323.65 : 237,771.42 = 100,689.83 : x
2. Step 2: Convert to fraction form
   172,323.65/237,771.42 = 100,689.83/x
3. Step 3: Cross multiply
   172,323.65x = 237,771.42 × 100,689.83
4. Step 4: Simplify right side
   172,323.65x = 23,941,162,669.80
5. Step 5: Solve for x
   x = 23,941,162,669.80/172,323.65
6. Step 6: Final answer
   x = 138,931.39