Finding the Fourth Proportional to 345,064.91, 476,194.50 and 192,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   345,064.91 : 476,194.50 = 192,109.78 : x
2. Step 2: Convert to fraction form
   345,064.91/476,194.50 = 192,109.78/x
3. Step 3: Cross multiply
   345,064.91x = 476,194.50 × 192,109.78
4. Step 4: Simplify right side
   345,064.91x = 91,481,619,441.72
5. Step 5: Solve for x
   x = 91,481,619,441.72/345,064.91
6. Step 6: Final answer
   x = 265,114.23