Finding the Fourth Proportional to 250,086.56, 345,119.48 and 136,909.31

Step by Step Solution

1. Step 1: Write the proportion equation
   250,086.56 : 345,119.48 = 136,909.31 : x
2. Step 2: Convert to fraction form
   250,086.56/345,119.48 = 136,909.31/x
3. Step 3: Cross multiply
   250,086.56x = 345,119.48 × 136,909.31
4. Step 4: Simplify right side
   250,086.56x = 47,250,070,052.61
5. Step 5: Solve for x
   x = 47,250,070,052.61/250,086.56
6. Step 6: Final answer
   x = 188,934.86