Finding the Fourth Proportional to 144,722.37, 216,709.69 and 99,882.09

Step by Step Solution

1. Step 1: Write the proportion equation
   144,722.37 : 216,709.69 = 99,882.09 : x
2. Step 2: Convert to fraction form
   144,722.37/216,709.69 = 99,882.09/x
3. Step 3: Cross multiply
   144,722.37x = 216,709.69 × 99,882.09
4. Step 4: Simplify right side
   144,722.37x = 21,645,416,760.45
5. Step 5: Solve for x
   x = 21,645,416,760.45/144,722.37
6. Step 6: Final answer
   x = 149,565.11