Finding the Fourth Proportional to 56,007.87, 77,290.82 and 30,857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,007.87 : 77,290.82 = 30,857.37 : x
2. Step 2: Convert to fraction form
   56,007.87/77,290.82 = 30,857.37/x
3. Step 3: Cross multiply
   56,007.87x = 77,290.82 × 30,857.37
4. Step 4: Simplify right side
   56,007.87x = 2,384,991,391.77
5. Step 5: Solve for x
   x = 2,384,991,391.77/56,007.87
6. Step 6: Final answer
   x = 42,583.15