Finding the Fourth Proportional to 82,191.72, 123,100.74 and 64,310.94

Step by Step Solution

1. Step 1: Write the proportion equation
   82,191.72 : 123,100.74 = 64,310.94 : x
2. Step 2: Convert to fraction form
   82,191.72/123,100.74 = 64,310.94/x
3. Step 3: Cross multiply
   82,191.72x = 123,100.74 × 64,310.94
4. Step 4: Simplify right side
   82,191.72x = 7,916,724,304.10
5. Step 5: Solve for x
   x = 7,916,724,304.10/82,191.72
6. Step 6: Final answer
   x = 96,320.22