Finding the Fourth Proportional to 102,007.73, 140,761.71 and 56,682.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,007.73 : 140,761.71 = 56,682.83 : x
2. Step 2: Convert to fraction form
   102,007.73/140,761.71 = 56,682.83/x
3. Step 3: Cross multiply
   102,007.73x = 140,761.71 × 56,682.83
4. Step 4: Simplify right side
   102,007.73x = 7,978,771,795.03
5. Step 5: Solve for x
   x = 7,978,771,795.03/102,007.73
6. Step 6: Final answer
   x = 78,217.33