Finding the Fourth Proportional to 56,435, 77,879.96 and 30,942.46

Step by Step Solution

1. Step 1: Write the proportion equation
   56,435 : 77,879.96 = 30,942.46 : x
2. Step 2: Convert to fraction form
   56,435/77,879.96 = 30,942.46/x
3. Step 3: Cross multiply
   56,435x = 77,879.96 × 30,942.46
4. Step 4: Simplify right side
   56,435x = 2,409,797,547.10
5. Step 5: Solve for x
   x = 2,409,797,547.10/56,435
6. Step 6: Final answer
   x = 42,700.41