Finding the Fourth Proportional to 78,323.63, 108,086.73 and 42,513.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,323.63 : 108,086.73 = 42,513.65 : x
2. Step 2: Convert to fraction form
   78,323.63/108,086.73 = 42,513.65/x
3. Step 3: Cross multiply
   78,323.63x = 108,086.73 × 42,513.65
4. Step 4: Simplify right side
   78,323.63x = 4,595,161,408.86
5. Step 5: Solve for x
   x = 4,595,161,408.86/78,323.63
6. Step 6: Final answer
   x = 58,668.90