Finding the Fourth Proportional to 250,145.14, 345,196.86 and 136,967.88

Step by Step Solution

1. Step 1: Write the proportion equation
   250,145.14 : 345,196.86 = 136,967.88 : x
2. Step 2: Convert to fraction form
   250,145.14/345,196.86 = 136,967.88/x
3. Step 3: Cross multiply
   250,145.14x = 345,196.86 × 136,967.88
4. Step 4: Simplify right side
   250,145.14x = 47,280,882,096.86
5. Step 5: Solve for x
   x = 47,280,882,096.86/250,145.14
6. Step 6: Final answer
   x = 189,013.79