Finding the Fourth Proportional to 200,640.64, 276,876.72 and 109,994.60

Step by Step Solution

1. Step 1: Write the proportion equation
   200,640.64 : 276,876.72 = 109,994.60 : x
2. Step 2: Convert to fraction form
   200,640.64/276,876.72 = 109,994.60/x
3. Step 3: Cross multiply
   200,640.64x = 276,876.72 × 109,994.60
4. Step 4: Simplify right side
   200,640.64x = 30,454,944,065.71
5. Step 5: Solve for x
   x = 30,454,944,065.71/200,640.64
6. Step 6: Final answer
   x = 151,788.51