Finding the Fourth Proportional to 58,389.73, 80,408.13 and 50,729.47

Step by Step Solution

1. Step 1: Write the proportion equation
   58,389.73 : 80,408.13 = 50,729.47 : x
2. Step 2: Convert to fraction form
   58,389.73/80,408.13 = 50,729.47/x
3. Step 3: Cross multiply
   58,389.73x = 80,408.13 × 50,729.47
4. Step 4: Simplify right side
   58,389.73x = 4,079,061,818.59
5. Step 5: Solve for x
   x = 4,079,061,818.59/58,389.73
6. Step 6: Final answer
   x = 69,859.23