Finding the Fourth Proportional to 253,499.72, 349,825.38 and 140,320.04

Step by Step Solution

1. Step 1: Write the proportion equation
   253,499.72 : 349,825.38 = 140,320.04 : x
2. Step 2: Convert to fraction form
   253,499.72/349,825.38 = 140,320.04/x
3. Step 3: Cross multiply
   253,499.72x = 349,825.38 × 140,320.04
4. Step 4: Simplify right side
   253,499.72x = 49,087,511,314.62
5. Step 5: Solve for x
   x = 49,087,511,314.62/253,499.72
6. Step 6: Final answer
   x = 193,639.31