Finding the Fourth Proportional to 56,284.94, 77,673.83 and 30,790.76

Step by Step Solution

1. Step 1: Write the proportion equation
   56,284.94 : 77,673.83 = 30,790.76 : x
2. Step 2: Convert to fraction form
   56,284.94/77,673.83 = 30,790.76/x
3. Step 3: Cross multiply
   56,284.94x = 77,673.83 × 30,790.76
4. Step 4: Simplify right side
   56,284.94x = 2,391,635,715.49
5. Step 5: Solve for x
   x = 2,391,635,715.49/56,284.94
6. Step 6: Final answer
   x = 42,491.58