Finding the Fourth Proportional to 56,593.89, 78,099.39 and 31,443.39

Step by Step Solution

1. Step 1: Write the proportion equation
   56,593.89 : 78,099.39 = 31,443.39 : x
2. Step 2: Convert to fraction form
   56,593.89/78,099.39 = 31,443.39/x
3. Step 3: Cross multiply
   56,593.89x = 78,099.39 × 31,443.39
4. Step 4: Simplify right side
   56,593.89x = 2,455,709,578.53
5. Step 5: Solve for x
   x = 2,455,709,578.53/56,593.89
6. Step 6: Final answer
   x = 43,391.78