Finding the Fourth Proportional to 253,978.39, 380,633.31 and 141,711.46

Step by Step Solution

1. Step 1: Write the proportion equation
   253,978.39 : 380,633.31 = 141,711.46 : x
2. Step 2: Convert to fraction form
   253,978.39/380,633.31 = 141,711.46/x
3. Step 3: Cross multiply
   253,978.39x = 380,633.31 × 141,711.46
4. Step 4: Simplify right side
   253,978.39x = 53,940,102,084.73
5. Step 5: Solve for x
   x = 53,940,102,084.73/253,978.39
6. Step 6: Final answer
   x = 212,380.68