Finding the Fourth Proportional to 82,747.82, 113,903.60 and 72,119

Step by Step Solution

1. Step 1: Write the proportion equation
   82,747.82 : 113,903.60 = 72,119 : x
2. Step 2: Convert to fraction form
   82,747.82/113,903.60 = 72,119/x
3. Step 3: Cross multiply
   82,747.82x = 113,903.60 × 72,119
4. Step 4: Simplify right side
   82,747.82x = 8,214,613,728.40
5. Step 5: Solve for x
   x = 8,214,613,728.40/82,747.82
6. Step 6: Final answer
   x = 99,272.87