Finding the Fourth Proportional to 126,196.92, 189,167.58 and 81,851.82

Step by Step Solution

1. Step 1: Write the proportion equation
   126,196.92 : 189,167.58 = 81,851.82 : x
2. Step 2: Convert to fraction form
   126,196.92/189,167.58 = 81,851.82/x
3. Step 3: Cross multiply
   126,196.92x = 189,167.58 × 81,851.82
4. Step 4: Simplify right side
   126,196.92x = 15,483,710,708.00
5. Step 5: Solve for x
   x = 15,483,710,708.00/126,196.92
6. Step 6: Final answer
   x = 122,694.84