Finding the Fourth Proportional to 189,522.32, 261,540.76 and 108,965.60

Step by Step Solution

1. Step 1: Write the proportion equation
   189,522.32 : 261,540.76 = 108,965.60 : x
2. Step 2: Convert to fraction form
   189,522.32/261,540.76 = 108,965.60/x
3. Step 3: Cross multiply
   189,522.32x = 261,540.76 × 108,965.60
4. Step 4: Simplify right side
   189,522.32x = 28,498,945,837.86
5. Step 5: Solve for x
   x = 28,498,945,837.86/189,522.32
6. Step 6: Final answer
   x = 150,372.50