Finding the Fourth Proportional to 250,089.31, 345,156.10 and 142,634.71

Step by Step Solution

1. Step 1: Write the proportion equation
   250,089.31 : 345,156.10 = 142,634.71 : x
2. Step 2: Convert to fraction form
   250,089.31/345,156.10 = 142,634.71/x
3. Step 3: Cross multiply
   250,089.31x = 345,156.10 × 142,634.71
4. Step 4: Simplify right side
   250,089.31x = 49,231,241,105.41
5. Step 5: Solve for x
   x = 49,231,241,105.41/250,089.31
6. Step 6: Final answer
   x = 196,854.64