Finding the Fourth Proportional to 76,399.82, 105,426.77 and 42,406.68

Step by Step Solution

1. Step 1: Write the proportion equation
   76,399.82 : 105,426.77 = 42,406.68 : x
2. Step 2: Convert to fraction form
   76,399.82/105,426.77 = 42,406.68/x
3. Step 3: Cross multiply
   76,399.82x = 105,426.77 × 42,406.68
4. Step 4: Simplify right side
   76,399.82x = 4,470,799,482.14
5. Step 5: Solve for x
   x = 4,470,799,482.14/76,399.82
6. Step 6: Final answer
   x = 58,518.46