Finding the Fourth Proportional to 78,246.34, 107,980 and 42,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,246.34 : 107,980 = 42,436.34 : x
2. Step 2: Convert to fraction form
   78,246.34/107,980 = 42,436.34/x
3. Step 3: Cross multiply
   78,246.34x = 107,980 × 42,436.34
4. Step 4: Simplify right side
   78,246.34x = 4,582,275,993.20
5. Step 5: Solve for x
   x = 4,582,275,993.20/78,246.34
6. Step 6: Final answer
   x = 58,562.18