Finding the Fourth Proportional to 78,018.34, 107,665.06 and 42,208.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,018.34 : 107,665.06 = 42,208.34 : x
2. Step 2: Convert to fraction form
   78,018.34/107,665.06 = 42,208.34/x
3. Step 3: Cross multiply
   78,018.34x = 107,665.06 × 42,208.34
4. Step 4: Simplify right side
   78,018.34x = 4,544,363,458.60
5. Step 5: Solve for x
   x = 4,544,363,458.60/78,018.34
6. Step 6: Final answer
   x = 58,247.37