Finding the Fourth Proportional to 250,399.41, 345,549.99 and 137,222.16

Step by Step Solution

1. Step 1: Write the proportion equation
   250,399.41 : 345,549.99 = 137,222.16 : x
2. Step 2: Convert to fraction form
   250,399.41/345,549.99 = 137,222.16/x
3. Step 3: Cross multiply
   250,399.41x = 345,549.99 × 137,222.16
4. Step 4: Simplify right side
   250,399.41x = 47,417,116,015.78
5. Step 5: Solve for x
   x = 47,417,116,015.78/250,399.41
6. Step 6: Final answer
   x = 189,365.93