Finding the Fourth Proportional to 78,458.22, 108,273.08 and 42,648.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,458.22 : 108,273.08 = 42,648.34 : x
2. Step 2: Convert to fraction form
   78,458.22/108,273.08 = 42,648.34/x
3. Step 3: Cross multiply
   78,458.22x = 108,273.08 × 42,648.34
4. Step 4: Simplify right side
   78,458.22x = 4,617,667,128.69
5. Step 5: Solve for x
   x = 4,617,667,128.69/78,458.22
6. Step 6: Final answer
   x = 58,855.11