Finding the Fourth Proportional to 345,757.52, 518,636.37 and 109,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   345,757.52 : 518,636.37 = 109,118.72 : x
2. Step 2: Convert to fraction form
   345,757.52/518,636.37 = 109,118.72/x
3. Step 3: Cross multiply
   345,757.52x = 518,636.37 × 109,118.72
4. Step 4: Simplify right side
   345,757.52x = 56,592,936,839.85
5. Step 5: Solve for x
   x = 56,592,936,839.85/345,757.52
6. Step 6: Final answer
   x = 163,678.11