Finding the Fourth Proportional to 56,935.42, 78,571.65 and 31,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,935.42 : 78,571.65 = 31,443.50 : x
2. Step 2: Convert to fraction form
   56,935.42/78,571.65 = 31,443.50/x
3. Step 3: Cross multiply
   56,935.42x = 78,571.65 × 31,443.50
4. Step 4: Simplify right side
   56,935.42x = 2,470,567,991.12
5. Step 5: Solve for x
   x = 2,470,567,991.12/56,935.42
6. Step 6: Final answer
   x = 43,392.46