Finding the Fourth Proportional to 200,314.81, 276,434.67 and 109,671.49

Step by Step Solution

1. Step 1: Write the proportion equation
   200,314.81 : 276,434.67 = 109,671.49 : x
2. Step 2: Convert to fraction form
   200,314.81/276,434.67 = 109,671.49/x
3. Step 3: Cross multiply
   200,314.81x = 276,434.67 × 109,671.49
4. Step 4: Simplify right side
   200,314.81x = 30,317,002,146.56
5. Step 5: Solve for x
   x = 30,317,002,146.56/200,314.81
6. Step 6: Final answer
   x = 151,346.78