Finding the Fourth Proportional to 200,404.73, 276,425.53 and 128,875.25

Step by Step Solution

1. Step 1: Write the proportion equation
   200,404.73 : 276,425.53 = 128,875.25 : x
2. Step 2: Convert to fraction form
   200,404.73/276,425.53 = 128,875.25/x
3. Step 3: Cross multiply
   200,404.73x = 276,425.53 × 128,875.25
4. Step 4: Simplify right side
   200,404.73x = 35,624,409,654.01
5. Step 5: Solve for x
   x = 35,624,409,654.01/200,404.73
6. Step 6: Final answer
   x = 177,762.32