Finding the Fourth Proportional to 83,680.69, 125,362.77 and 64,868.56

Step by Step Solution

1. Step 1: Write the proportion equation
   83,680.69 : 125,362.77 = 64,868.56 : x
2. Step 2: Convert to fraction form
   83,680.69/125,362.77 = 64,868.56/x
3. Step 3: Cross multiply
   83,680.69x = 125,362.77 × 64,868.56
4. Step 4: Simplify right side
   83,680.69x = 8,132,101,818.54
5. Step 5: Solve for x
   x = 8,132,101,818.54/83,680.69
6. Step 6: Final answer
   x = 97,180.15