Finding the Fourth Proportional to 42,425.76, 58,561.28 and 30,523.70

Step by Step Solution

1. Step 1: Write the proportion equation
   42,425.76 : 58,561.28 = 30,523.70 : x
2. Step 2: Convert to fraction form
   42,425.76/58,561.28 = 30,523.70/x
3. Step 3: Cross multiply
   42,425.76x = 58,561.28 × 30,523.70
4. Step 4: Simplify right side
   42,425.76x = 1,787,506,496.91
5. Step 5: Solve for x
   x = 1,787,506,496.91/42,425.76
6. Step 6: Final answer
   x = 42,132.57