Finding the Fourth Proportional to 102,003.73, 140,762.33 and 56,680.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,003.73 : 140,762.33 = 56,680.54 : x
2. Step 2: Convert to fraction form
   102,003.73/140,762.33 = 56,680.54/x
3. Step 3: Cross multiply
   102,003.73x = 140,762.33 × 56,680.54
4. Step 4: Simplify right side
   102,003.73x = 7,978,484,876.06
5. Step 5: Solve for x
   x = 7,978,484,876.06/102,003.73
6. Step 6: Final answer
   x = 78,217.58