Finding the Fourth Proportional to 200,383.02, 276,715.89 and 128,887.16

Step by Step Solution

1. Step 1: Write the proportion equation
   200,383.02 : 276,715.89 = 128,887.16 : x
2. Step 2: Convert to fraction form
   200,383.02/276,715.89 = 128,887.16/x
3. Step 3: Cross multiply
   200,383.02x = 276,715.89 × 128,887.16
4. Step 4: Simplify right side
   200,383.02x = 35,665,123,805.39
5. Step 5: Solve for x
   x = 35,665,123,805.39/200,383.02
6. Step 6: Final answer
   x = 177,984.76