Finding the Fourth Proportional to 57,978.76, 80,003.06 and 36,720.52

Step by Step Solution

1. Step 1: Write the proportion equation
   57,978.76 : 80,003.06 = 36,720.52 : x
2. Step 2: Convert to fraction form
   57,978.76/80,003.06 = 36,720.52/x
3. Step 3: Cross multiply
   57,978.76x = 80,003.06 × 36,720.52
4. Step 4: Simplify right side
   57,978.76x = 2,937,753,964.79
5. Step 5: Solve for x
   x = 2,937,753,964.79/57,978.76
6. Step 6: Final answer
   x = 50,669.49