Finding the Fourth Proportional to 88,039.89, 121,519.98 and 72,162.27

Step by Step Solution

1. Step 1: Write the proportion equation
   88,039.89 : 121,519.98 = 72,162.27 : x
2. Step 2: Convert to fraction form
   88,039.89/121,519.98 = 72,162.27/x
3. Step 3: Cross multiply
   88,039.89x = 121,519.98 × 72,162.27
4. Step 4: Simplify right side
   88,039.89x = 8,769,157,607.15
5. Step 5: Solve for x
   x = 8,769,157,607.15/88,039.89
6. Step 6: Final answer
   x = 99,604.37