Finding the Fourth Proportional to 56,920.94, 78,573.06 and 50,942.23

Step by Step Solution

1. Step 1: Write the proportion equation
   56,920.94 : 78,573.06 = 50,942.23 : x
2. Step 2: Convert to fraction form
   56,920.94/78,573.06 = 50,942.23/x
3. Step 3: Cross multiply
   56,920.94x = 78,573.06 × 50,942.23
4. Step 4: Simplify right side
   56,920.94x = 4,002,686,501.46
5. Step 5: Solve for x
   x = 4,002,686,501.46/56,920.94
6. Step 6: Final answer
   x = 70,320.11