Finding the Fourth Proportional to 78,103.54, 107,782.72 and 42,293.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,103.54 : 107,782.72 = 42,293.65 : x
2. Step 2: Convert to fraction form
   78,103.54/107,782.72 = 42,293.65/x
3. Step 3: Cross multiply
   78,103.54x = 107,782.72 × 42,293.65
4. Step 4: Simplify right side
   78,103.54x = 4,558,524,635.73
5. Step 5: Solve for x
   x = 4,558,524,635.73/78,103.54
6. Step 6: Final answer
   x = 58,365.15