Finding the Fourth Proportional to 120,243.96, 165,910.82 and 72,496.28

Step by Step Solution

1. Step 1: Write the proportion equation
   120,243.96 : 165,910.82 = 72,496.28 : x
2. Step 2: Convert to fraction form
   120,243.96/165,910.82 = 72,496.28/x
3. Step 3: Cross multiply
   120,243.96x = 165,910.82 × 72,496.28
4. Step 4: Simplify right side
   120,243.96x = 12,027,917,314.05
5. Step 5: Solve for x
   x = 12,027,917,314.05/120,243.96
6. Step 6: Final answer
   x = 100,029.28