Finding the Fourth Proportional to 189,401.12, 261,388.32 and 108,856.76

Step by Step Solution

1. Step 1: Write the proportion equation
   189,401.12 : 261,388.32 = 108,856.76 : x
2. Step 2: Convert to fraction form
   189,401.12/261,388.32 = 108,856.76/x
3. Step 3: Cross multiply
   189,401.12x = 261,388.32 × 108,856.76
4. Step 4: Simplify right side
   189,401.12x = 28,453,885,617.04
5. Step 5: Solve for x
   x = 28,453,885,617.04/189,401.12
6. Step 6: Final answer
   x = 150,230.82