Finding the Fourth Proportional to 56,105, 77,426.58 and 30,956.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,105 : 77,426.58 = 30,956.12 : x
2. Step 2: Convert to fraction form
   56,105/77,426.58 = 30,956.12/x
3. Step 3: Cross multiply
   56,105x = 77,426.58 × 30,956.12
4. Step 4: Simplify right side
   56,105x = 2,396,826,501.67
5. Step 5: Solve for x
   x = 2,396,826,501.67/56,105
6. Step 6: Final answer
   x = 42,720.37