Finding the Fourth Proportional to 78,323.70, 108,086.79 and 42,513.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,323.70 : 108,086.79 = 42,513.70 : x
2. Step 2: Convert to fraction form
   78,323.70/108,086.79 = 42,513.70/x
3. Step 3: Cross multiply
   78,323.70x = 108,086.79 × 42,513.70
4. Step 4: Simplify right side
   78,323.70x = 4,595,169,364.02
5. Step 5: Solve for x
   x = 4,595,169,364.02/78,323.70
6. Step 6: Final answer
   x = 58,668.95