Finding the Fourth Proportional to 276,103.56, 381,018.72 and 155,245.08

Step by Step Solution

1. Step 1: Write the proportion equation
   276,103.56 : 381,018.72 = 155,245.08 : x
2. Step 2: Convert to fraction form
   276,103.56/381,018.72 = 155,245.08/x
3. Step 3: Cross multiply
   276,103.56x = 381,018.72 × 155,245.08
4. Step 4: Simplify right side
   276,103.56x = 59,151,281,667.90
5. Step 5: Solve for x
   x = 59,151,281,667.90/276,103.56
6. Step 6: Final answer
   x = 214,235.85