Finding the Fourth Proportional to 188,857.59, 260,638.20 and 103,989.84

Step by Step Solution

1. Step 1: Write the proportion equation
   188,857.59 : 260,638.20 = 103,989.84 : x
2. Step 2: Convert to fraction form
   188,857.59/260,638.20 = 103,989.84/x
3. Step 3: Cross multiply
   188,857.59x = 260,638.20 × 103,989.84
4. Step 4: Simplify right side
   188,857.59x = 27,103,724,715.89
5. Step 5: Solve for x
   x = 27,103,724,715.89/188,857.59
6. Step 6: Final answer
   x = 143,514.09