Finding the Fourth Proportional to 143,354.28, 197,833.98 and 78,828.41

Step by Step Solution

1. Step 1: Write the proportion equation
   143,354.28 : 197,833.98 = 78,828.41 : x
2. Step 2: Convert to fraction form
   143,354.28/197,833.98 = 78,828.41/x
3. Step 3: Cross multiply
   143,354.28x = 197,833.98 × 78,828.41
4. Step 4: Simplify right side
   143,354.28x = 15,594,938,087.37
5. Step 5: Solve for x
   x = 15,594,938,087.37/143,354.28
6. Step 6: Final answer
   x = 108,786.00