Finding the Fourth Proportional to 76,383.43, 105,410.28 and 42,394.11

Step by Step Solution

1. Step 1: Write the proportion equation
   76,383.43 : 105,410.28 = 42,394.11 : x
2. Step 2: Convert to fraction form
   76,383.43/105,410.28 = 42,394.11/x
3. Step 3: Cross multiply
   76,383.43x = 105,410.28 × 42,394.11
4. Step 4: Simplify right side
   76,383.43x = 4,468,775,559.72
5. Step 5: Solve for x
   x = 4,468,775,559.72/76,383.43
6. Step 6: Final answer
   x = 58,504.52