Finding the Fourth Proportional to 196,389.81, 271,005.89 and 115,820.73

Step by Step Solution

1. Step 1: Write the proportion equation
   196,389.81 : 271,005.89 = 115,820.73 : x
2. Step 2: Convert to fraction form
   196,389.81/271,005.89 = 115,820.73/x
3. Step 3: Cross multiply
   196,389.81x = 271,005.89 × 115,820.73
4. Step 4: Simplify right side
   196,389.81x = 31,388,099,435.00
5. Step 5: Solve for x
   x = 31,388,099,435.00/196,389.81
6. Step 6: Final answer
   x = 159,825.50