Finding the Fourth Proportional to 42,634.62, 58,826.79 and 30,724.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,634.62 : 58,826.79 = 30,724.38 : x
2. Step 2: Convert to fraction form
   42,634.62/58,826.79 = 30,724.38/x
3. Step 3: Cross multiply
   42,634.62x = 58,826.79 × 30,724.38
4. Step 4: Simplify right side
   42,634.62x = 1,807,416,650.14
5. Step 5: Solve for x
   x = 1,807,416,650.14/42,634.62
6. Step 6: Final answer
   x = 42,393.17