Finding the Fourth Proportional to 253,196.70, 349,499.38 and 145,809.52

Step by Step Solution

1. Step 1: Write the proportion equation
   253,196.70 : 349,499.38 = 145,809.52 : x
2. Step 2: Convert to fraction form
   253,196.70/349,499.38 = 145,809.52/x
3. Step 3: Cross multiply
   253,196.70x = 349,499.38 × 145,809.52
4. Step 4: Simplify right side
   253,196.70x = 50,960,336,838.10
5. Step 5: Solve for x
   x = 50,960,336,838.10/253,196.70
6. Step 6: Final answer
   x = 201,267.78