Finding the Fourth Proportional to 56,819.79, 78,411.83 and 31,327.07

Step by Step Solution

1. Step 1: Write the proportion equation
   56,819.79 : 78,411.83 = 31,327.07 : x
2. Step 2: Convert to fraction form
   56,819.79/78,411.83 = 31,327.07/x
3. Step 3: Cross multiply
   56,819.79x = 78,411.83 × 31,327.07
4. Step 4: Simplify right side
   56,819.79x = 2,456,412,338.54
5. Step 5: Solve for x
   x = 2,456,412,338.54/56,819.79
6. Step 6: Final answer
   x = 43,231.63