Finding the Fourth Proportional to 250,005.12, 344,938.72 and 142,535.96

Step by Step Solution

1. Step 1: Write the proportion equation
   250,005.12 : 344,938.72 = 142,535.96 : x
2. Step 2: Convert to fraction form
   250,005.12/344,938.72 = 142,535.96/x
3. Step 3: Cross multiply
   250,005.12x = 344,938.72 × 142,535.96
4. Step 4: Simplify right side
   250,005.12x = 49,166,171,596.37
5. Step 5: Solve for x
   x = 49,166,171,596.37/250,005.12
6. Step 6: Final answer
   x = 196,660.66