Finding the Fourth Proportional to 300,105.88, 414,100.10 and 172,756.86

Step by Step Solution

1. Step 1: Write the proportion equation
   300,105.88 : 414,100.10 = 172,756.86 : x
2. Step 2: Convert to fraction form
   300,105.88/414,100.10 = 172,756.86/x
3. Step 3: Cross multiply
   300,105.88x = 414,100.10 × 172,756.86
4. Step 4: Simplify right side
   300,105.88x = 71,538,633,001.69
5. Step 5: Solve for x
   x = 71,538,633,001.69/300,105.88
6. Step 6: Final answer
   x = 238,377.98