Finding the Fourth Proportional to 78,309.99, 108,067.87 and 42,500.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,309.99 : 108,067.87 = 42,500.03 : x
2. Step 2: Convert to fraction form
   78,309.99/108,067.87 = 42,500.03/x
3. Step 3: Cross multiply
   78,309.99x = 108,067.87 × 42,500.03
4. Step 4: Simplify right side
   78,309.99x = 4,592,887,229.82
5. Step 5: Solve for x
   x = 4,592,887,229.82/78,309.99
6. Step 6: Final answer
   x = 58,650.08