Finding the Fourth Proportional to 76,397.83, 105,424 and 42,404.68

Step by Step Solution

1. Step 1: Write the proportion equation
   76,397.83 : 105,424 = 42,404.68 : x
2. Step 2: Convert to fraction form
   76,397.83/105,424 = 42,404.68/x
3. Step 3: Cross multiply
   76,397.83x = 105,424 × 42,404.68
4. Step 4: Simplify right side
   76,397.83x = 4,470,470,984.32
5. Step 5: Solve for x
   x = 4,470,470,984.32/76,397.83
6. Step 6: Final answer
   x = 58,515.68