Finding the Fourth Proportional to 42,565, 58,713.06 and 30,609.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,565 : 58,713.06 = 30,609.40 : x
2. Step 2: Convert to fraction form
   42,565/58,713.06 = 30,609.40/x
3. Step 3: Cross multiply
   42,565x = 58,713.06 × 30,609.40
4. Step 4: Simplify right side
   42,565x = 1,797,171,538.76
5. Step 5: Solve for x
   x = 1,797,171,538.76/42,565
6. Step 6: Final answer
   x = 42,221.81