Finding the Fourth Proportional to 78,250.34, 107,985.52 and 42,440.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,250.34 : 107,985.52 = 42,440.34 : x
2. Step 2: Convert to fraction form
   78,250.34/107,985.52 = 42,440.34/x
3. Step 3: Cross multiply
   78,250.34x = 107,985.52 × 42,440.34
4. Step 4: Simplify right side
   78,250.34x = 4,582,942,183.88
5. Step 5: Solve for x
   x = 4,582,942,183.88/78,250.34
6. Step 6: Final answer
   x = 58,567.70