Finding the Fourth Proportional to 78,469.07, 108,288.23 and 42,658.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.07 : 108,288.23 = 42,658.29 : x
2. Step 2: Convert to fraction form
   78,469.07/108,288.23 = 42,658.29/x
3. Step 3: Cross multiply
   78,469.07x = 108,288.23 × 42,658.29
4. Step 4: Simplify right side
   78,469.07x = 4,619,390,505.64
5. Step 5: Solve for x
   x = 4,619,390,505.64/78,469.07
6. Step 6: Final answer
   x = 58,868.94