Finding the Fourth Proportional to 189,643.26, 261,697.59 and 109,057.98

Step by Step Solution

1. Step 1: Write the proportion equation
   189,643.26 : 261,697.59 = 109,057.98 : x
2. Step 2: Convert to fraction form
   189,643.26/261,697.59 = 109,057.98/x
3. Step 3: Cross multiply
   189,643.26x = 261,697.59 × 109,057.98
4. Step 4: Simplify right side
   189,643.26x = 28,540,210,536.27
5. Step 5: Solve for x
   x = 28,540,210,536.27/189,643.26
6. Step 6: Final answer
   x = 150,494.20