Finding the Fourth Proportional to 142,237.94, 196,293.98 and 81,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,237.94 : 196,293.98 = 81,808.50 : x
2. Step 2: Convert to fraction form
   142,237.94/196,293.98 = 81,808.50/x
3. Step 3: Cross multiply
   142,237.94x = 196,293.98 × 81,808.50
4. Step 4: Simplify right side
   142,237.94x = 16,058,517,003.45
5. Step 5: Solve for x
   x = 16,058,517,003.45/142,237.94
6. Step 6: Final answer
   x = 112,898.97