Finding the Fourth Proportional to 58,390, 80,578.52 and 31,894

Step by Step Solution

1. Step 1: Write the proportion equation
   58,390 : 80,578.52 = 31,894 : x
2. Step 2: Convert to fraction form
   58,390/80,578.52 = 31,894/x
3. Step 3: Cross multiply
   58,390x = 80,578.52 × 31,894
4. Step 4: Simplify right side
   58,390x = 2,569,971,316.88
5. Step 5: Solve for x
   x = 2,569,971,316.88/58,390
6. Step 6: Final answer
   x = 44,013.89