Finding the Fourth Proportional to 78,613.49, 108,488.56 and 42,805.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,613.49 : 108,488.56 = 42,805.46 : x
2. Step 2: Convert to fraction form
   78,613.49/108,488.56 = 42,805.46/x
3. Step 3: Cross multiply
   78,613.49x = 108,488.56 × 42,805.46
4. Step 4: Simplify right side
   78,613.49x = 4,643,902,715.54
5. Step 5: Solve for x
   x = 4,643,902,715.54/78,613.49
6. Step 6: Final answer
   x = 59,072.59