Finding the Fourth Proportional to 102,003.60, 140,762.16 and 56,680.41

Step by Step Solution

1. Step 1: Write the proportion equation
   102,003.60 : 140,762.16 = 56,680.41 : x
2. Step 2: Convert to fraction form
   102,003.60/140,762.16 = 56,680.41/x
3. Step 3: Cross multiply
   102,003.60x = 140,762.16 × 56,680.41
4. Step 4: Simplify right side
   102,003.60x = 7,978,456,941.29
5. Step 5: Solve for x
   x = 7,978,456,941.29/102,003.60
6. Step 6: Final answer
   x = 78,217.41