Finding the Fourth Proportional to 76,383.69, 105,409.49 and 42,849.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,383.69 : 105,409.49 = 42,849.69 : x
2. Step 2: Convert to fraction form
   76,383.69/105,409.49 = 42,849.69/x
3. Step 3: Cross multiply
   76,383.69x = 105,409.49 × 42,849.69
4. Step 4: Simplify right side
   76,383.69x = 4,516,763,969.56
5. Step 5: Solve for x
   x = 4,516,763,969.56/76,383.69
6. Step 6: Final answer
   x = 59,132.57