Finding the Fourth Proportional to 45,189.72, 62,292.69 and 31,723.20

Step by Step Solution

1. Step 1: Write the proportion equation
   45,189.72 : 62,292.69 = 31,723.20 : x
2. Step 2: Convert to fraction form
   45,189.72/62,292.69 = 31,723.20/x
3. Step 3: Cross multiply
   45,189.72x = 62,292.69 × 31,723.20
4. Step 4: Simplify right side
   45,189.72x = 1,976,123,463.41
5. Step 5: Solve for x
   x = 1,976,123,463.41/45,189.72
6. Step 6: Final answer
   x = 43,729.49