Finding the Fourth Proportional to 42,565.50, 58,713.74 and 30,609.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,565.50 : 58,713.74 = 30,609.90 : x
2. Step 2: Convert to fraction form
   42,565.50/58,713.74 = 30,609.90/x
3. Step 3: Cross multiply
   42,565.50x = 58,713.74 × 30,609.90
4. Step 4: Simplify right side
   42,565.50x = 1,797,221,710.03
5. Step 5: Solve for x
   x = 1,797,221,710.03/42,565.50
6. Step 6: Final answer
   x = 42,222.50