Finding the Fourth Proportional to 78,631.62, 108,508.17 and 42,819.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,631.62 : 108,508.17 = 42,819.49 : x
2. Step 2: Convert to fraction form
   78,631.62/108,508.17 = 42,819.49/x
3. Step 3: Cross multiply
   78,631.62x = 108,508.17 × 42,819.49
4. Step 4: Simplify right side
   78,631.62x = 4,646,264,500.23
5. Step 5: Solve for x
   x = 4,646,264,500.23/78,631.62
6. Step 6: Final answer
   x = 59,089.01