Finding the Fourth Proportional to 200,123.10, 276,172.05 and 109,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   200,123.10 : 276,172.05 = 109,477.12 : x
2. Step 2: Convert to fraction form
   200,123.10/276,172.05 = 109,477.12/x
3. Step 3: Cross multiply
   200,123.10x = 276,172.05 × 109,477.12
4. Step 4: Simplify right side
   200,123.10x = 30,234,519,277.64
5. Step 5: Solve for x
   x = 30,234,519,277.64/200,123.10
6. Step 6: Final answer
   x = 151,079.61