Finding the Fourth Proportional to 214,015.56, 321,076.59 and 64,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   214,015.56 : 321,076.59 = 64,258.50 : x
2. Step 2: Convert to fraction form
   214,015.56/321,076.59 = 64,258.50/x
3. Step 3: Cross multiply
   214,015.56x = 321,076.59 × 64,258.50
4. Step 4: Simplify right side
   214,015.56x = 20,631,900,058.52
5. Step 5: Solve for x
   x = 20,631,900,058.52/214,015.56
6. Step 6: Final answer
   x = 96,403.74