Finding the Fourth Proportional to 76,371.90, 105,399.83 and 42,387.03

Step by Step Solution

1. Step 1: Write the proportion equation
   76,371.90 : 105,399.83 = 42,387.03 : x
2. Step 2: Convert to fraction form
   76,371.90/105,399.83 = 42,387.03/x
3. Step 3: Cross multiply
   76,371.90x = 105,399.83 × 42,387.03
4. Step 4: Simplify right side
   76,371.90x = 4,467,585,544.27
5. Step 5: Solve for x
   x = 4,467,585,544.27/76,371.90
6. Step 6: Final answer
   x = 58,497.77