Finding the Fourth Proportional to 316,601.49, 436,910.76 and 171,408.79

Step by Step Solution

1. Step 1: Write the proportion equation
   316,601.49 : 436,910.76 = 171,408.79 : x
2. Step 2: Convert to fraction form
   316,601.49/436,910.76 = 171,408.79/x
3. Step 3: Cross multiply
   316,601.49x = 436,910.76 × 171,408.79
4. Step 4: Simplify right side
   316,601.49x = 74,890,345,255.72
5. Step 5: Solve for x
   x = 74,890,345,255.72/316,601.49
6. Step 6: Final answer
   x = 236,544.51