Finding the Fourth Proportional to 78,881.58, 108,794.88 and 50,589.90

Step by Step Solution

1. Step 1: Write the proportion equation
   78,881.58 : 108,794.88 = 50,589.90 : x
2. Step 2: Convert to fraction form
   78,881.58/108,794.88 = 50,589.90/x
3. Step 3: Cross multiply
   78,881.58x = 108,794.88 × 50,589.90
4. Step 4: Simplify right side
   78,881.58x = 5,503,922,099.71
5. Step 5: Solve for x
   x = 5,503,922,099.71/78,881.58
6. Step 6: Final answer
   x = 69,774.49