Finding the Fourth Proportional to 56,983.20, 78,591.98 and 53,163.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,983.20 : 78,591.98 = 53,163.52 : x
2. Step 2: Convert to fraction form
   56,983.20/78,591.98 = 53,163.52/x
3. Step 3: Cross multiply
   56,983.20x = 78,591.98 × 53,163.52
4. Step 4: Simplify right side
   56,983.20x = 4,178,226,300.57
5. Step 5: Solve for x
   x = 4,178,226,300.57/56,983.20
6. Step 6: Final answer
   x = 73,323.83