Finding the Fourth Proportional to 300,942.72, 415,284.96 and 173,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,942.72 : 415,284.96 = 173,610.72 : x
2. Step 2: Convert to fraction form
   300,942.72/415,284.96 = 173,610.72/x
3. Step 3: Cross multiply
   300,942.72x = 415,284.96 × 173,610.72
4. Step 4: Simplify right side
   300,942.72x = 72,097,920,910.77
5. Step 5: Solve for x
   x = 72,097,920,910.77/300,942.72
6. Step 6: Final answer
   x = 239,573.57