Finding the Fourth Proportional to 62,778.73, 86,576.70 and 42,665.62

Step by Step Solution

1. Step 1: Write the proportion equation
   62,778.73 : 86,576.70 = 42,665.62 : x
2. Step 2: Convert to fraction form
   62,778.73/86,576.70 = 42,665.62/x
3. Step 3: Cross multiply
   62,778.73x = 86,576.70 × 42,665.62
4. Step 4: Simplify right side
   62,778.73x = 3,693,848,583.05
5. Step 5: Solve for x
   x = 3,693,848,583.05/62,778.73
6. Step 6: Final answer
   x = 58,839.17