Finding the Fourth Proportional to 250,100.09, 345,105.98 and 142,663.71

Step by Step Solution

1. Step 1: Write the proportion equation
   250,100.09 : 345,105.98 = 142,663.71 : x
2. Step 2: Convert to fraction form
   250,100.09/345,105.98 = 142,663.71/x
3. Step 3: Cross multiply
   250,100.09x = 345,105.98 × 142,663.71
4. Step 4: Simplify right side
   250,100.09x = 49,234,101,368.29
5. Step 5: Solve for x
   x = 49,234,101,368.29/250,100.09
6. Step 6: Final answer
   x = 196,857.59