Finding the Fourth Proportional to 58,578.18, 80,838.27 and 31,720.69

Step by Step Solution

1. Step 1: Write the proportion equation
   58,578.18 : 80,838.27 = 31,720.69 : x
2. Step 2: Convert to fraction form
   58,578.18/80,838.27 = 31,720.69/x
3. Step 3: Cross multiply
   58,578.18x = 80,838.27 × 31,720.69
4. Step 4: Simplify right side
   58,578.18x = 2,564,245,702.81
5. Step 5: Solve for x
   x = 2,564,245,702.81/58,578.18
6. Step 6: Final answer
   x = 43,774.76