Finding the Fourth Proportional to 78,048.45, 107,707.14 and 42,238.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,048.45 : 107,707.14 = 42,238.46 : x
2. Step 2: Convert to fraction form
   78,048.45/107,707.14 = 42,238.46/x
3. Step 3: Cross multiply
   78,048.45x = 107,707.14 × 42,238.46
4. Step 4: Simplify right side
   78,048.45x = 4,549,383,724.60
5. Step 5: Solve for x
   x = 4,549,383,724.60/78,048.45
6. Step 6: Final answer
   x = 58,289.23