Finding the Fourth Proportional to 215,284.50, 322,978.62 and 67,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,284.50 : 322,978.62 = 67,540.50 : x
2. Step 2: Convert to fraction form
   215,284.50/322,978.62 = 67,540.50/x
3. Step 3: Cross multiply
   215,284.50x = 322,978.62 × 67,540.50
4. Step 4: Simplify right side
   215,284.50x = 21,814,137,484.11
5. Step 5: Solve for x
   x = 21,814,137,484.11/215,284.50
6. Step 6: Final answer
   x = 101,327.02