Finding the Fourth Proportional to 345,105.99, 517,711.23 and 108,426.42

Step by Step Solution

1. Step 1: Write the proportion equation
   345,105.99 : 517,711.23 = 108,426.42 : x
2. Step 2: Convert to fraction form
   345,105.99/517,711.23 = 108,426.42/x
3. Step 3: Cross multiply
   345,105.99x = 517,711.23 × 108,426.42
4. Step 4: Simplify right side
   345,105.99x = 56,133,575,262.70
5. Step 5: Solve for x
   x = 56,133,575,262.70/345,105.99
6. Step 6: Final answer
   x = 162,656.04