Finding the Fourth Proportional to 200,056.72, 276,068.08 and 109,395.12

Step by Step Solution

1. Step 1: Write the proportion equation
   200,056.72 : 276,068.08 = 109,395.12 : x
2. Step 2: Convert to fraction form
   200,056.72/276,068.08 = 109,395.12/x
3. Step 3: Cross multiply
   200,056.72x = 276,068.08 × 109,395.12
4. Step 4: Simplify right side
   200,056.72x = 30,200,500,739.77
5. Step 5: Solve for x
   x = 30,200,500,739.77/200,056.72
6. Step 6: Final answer
   x = 150,959.69