Finding the Fourth Proportional to 143,410.38, 197,906.72 and 78,886.23

Step by Step Solution

1. Step 1: Write the proportion equation
   143,410.38 : 197,906.72 = 78,886.23 : x
2. Step 2: Convert to fraction form
   143,410.38/197,906.72 = 78,886.23/x
3. Step 3: Cross multiply
   143,410.38x = 197,906.72 × 78,886.23
4. Step 4: Simplify right side
   143,410.38x = 15,612,115,328.29
5. Step 5: Solve for x
   x = 15,612,115,328.29/143,410.38
6. Step 6: Final answer
   x = 108,863.22