Finding the Fourth Proportional to 185,722.37, 256,297.89 and 100,839.43

Step by Step Solution

1. Step 1: Write the proportion equation
   185,722.37 : 256,297.89 = 100,839.43 : x
2. Step 2: Convert to fraction form
   185,722.37/256,297.89 = 100,839.43/x
3. Step 3: Cross multiply
   185,722.37x = 256,297.89 × 100,839.43
4. Step 4: Simplify right side
   185,722.37x = 25,844,934,030.65
5. Step 5: Solve for x
   x = 25,844,934,030.65/185,722.37
6. Step 6: Final answer
   x = 139,158.97