Finding the Fourth Proportional to 200,423.64, 276,574.72 and 109,780

Step by Step Solution

1. Step 1: Write the proportion equation
   200,423.64 : 276,574.72 = 109,780 : x
2. Step 2: Convert to fraction form
   200,423.64/276,574.72 = 109,780/x
3. Step 3: Cross multiply
   200,423.64x = 276,574.72 × 109,780
4. Step 4: Simplify right side
   200,423.64x = 30,362,372,761.60
5. Step 5: Solve for x
   x = 30,362,372,761.60/200,423.64
6. Step 6: Final answer
   x = 151,490.98