Finding the Fourth Proportional to 78,630.62, 108,506.79 and 42,818.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,630.62 : 108,506.79 = 42,818.49 : x
2. Step 2: Convert to fraction form
   78,630.62/108,506.79 = 42,818.49/x
3. Step 3: Cross multiply
   78,630.62x = 108,506.79 × 42,818.49
4. Step 4: Simplify right side
   78,630.62x = 4,646,096,902.55
5. Step 5: Solve for x
   x = 4,646,096,902.55/78,630.62
6. Step 6: Final answer
   x = 59,087.63