Finding the Fourth Proportional to 250,086.72, 345,119.72 and 136,909.48

Step by Step Solution

1. Step 1: Write the proportion equation
   250,086.72 : 345,119.72 = 136,909.48 : x
2. Step 2: Convert to fraction form
   250,086.72/345,119.72 = 136,909.48/x
3. Step 3: Cross multiply
   250,086.72x = 345,119.72 × 136,909.48
4. Step 4: Simplify right side
   250,086.72x = 47,250,161,402.95
5. Step 5: Solve for x
   x = 47,250,161,402.95/250,086.72
6. Step 6: Final answer
   x = 188,935.11