Finding the Fourth Proportional to 214,196.64, 321,355.16 and 79,258.72

Step by Step Solution

1. Step 1: Write the proportion equation
   214,196.64 : 321,355.16 = 79,258.72 : x
2. Step 2: Convert to fraction form
   214,196.64/321,355.16 = 79,258.72/x
3. Step 3: Cross multiply
   214,196.64x = 321,355.16 × 79,258.72
4. Step 4: Simplify right side
   214,196.64x = 25,470,198,647.00
5. Step 5: Solve for x
   x = 25,470,198,647.00/214,196.64
6. Step 6: Final answer
   x = 118,910.36