Finding the Fourth Proportional to 200,298.17, 276,598.83 and 128,802.41

Step by Step Solution

1. Step 1: Write the proportion equation
   200,298.17 : 276,598.83 = 128,802.41 : x
2. Step 2: Convert to fraction form
   200,298.17/276,598.83 = 128,802.41/x
3. Step 3: Cross multiply
   200,298.17x = 276,598.83 × 128,802.41
4. Step 4: Simplify right side
   200,298.17x = 35,626,595,907.18
5. Step 5: Solve for x
   x = 35,626,595,907.18/200,298.17
6. Step 6: Final answer
   x = 177,867.81