Finding the Fourth Proportional to 142,233.78, 196,288.56 and 81,804.45

Step by Step Solution

1. Step 1: Write the proportion equation
   142,233.78 : 196,288.56 = 81,804.45 : x
2. Step 2: Convert to fraction form
   142,233.78/196,288.56 = 81,804.45/x
3. Step 3: Cross multiply
   142,233.78x = 196,288.56 × 81,804.45
4. Step 4: Simplify right side
   142,233.78x = 16,057,277,692.09
5. Step 5: Solve for x
   x = 16,057,277,692.09/142,233.78
6. Step 6: Final answer
   x = 112,893.56