Finding the Fourth Proportional to 139,288.76, 208,700.68 and 134,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,288.76 : 208,700.68 = 134,105.56 : x
2. Step 2: Convert to fraction form
   139,288.76/208,700.68 = 134,105.56/x
3. Step 3: Cross multiply
   139,288.76x = 208,700.68 × 134,105.56
4. Step 4: Simplify right side
   139,288.76x = 27,987,921,563.78
5. Step 5: Solve for x
   x = 27,987,921,563.78/139,288.76
6. Step 6: Final answer
   x = 200,934.53