Finding the Fourth Proportional to 42,725.30, 58,890.93 and 30,771.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,725.30 : 58,890.93 = 30,771.86 : x
2. Step 2: Convert to fraction form
   42,725.30/58,890.93 = 30,771.86/x
3. Step 3: Cross multiply
   42,725.30x = 58,890.93 × 30,771.86
4. Step 4: Simplify right side
   42,725.30x = 1,812,183,453.23
5. Step 5: Solve for x
   x = 1,812,183,453.23/42,725.30
6. Step 6: Final answer
   x = 42,414.76