Finding the Fourth Proportional to 82,190.72, 123,099.22 and 64,309.94

Step by Step Solution

1. Step 1: Write the proportion equation
   82,190.72 : 123,099.22 = 64,309.94 : x
2. Step 2: Convert to fraction form
   82,190.72/123,099.22 = 64,309.94/x
3. Step 3: Cross multiply
   82,190.72x = 123,099.22 × 64,309.94
4. Step 4: Simplify right side
   82,190.72x = 7,916,503,452.25
5. Step 5: Solve for x
   x = 7,916,503,452.25/82,190.72
6. Step 6: Final answer
   x = 96,318.70