Finding the Fourth Proportional to 87,879, 121,272.38 and 47,591.83

Step by Step Solution

1. Step 1: Write the proportion equation
   87,879 : 121,272.38 = 47,591.83 : x
2. Step 2: Convert to fraction form
   87,879/121,272.38 = 47,591.83/x
3. Step 3: Cross multiply
   87,879x = 121,272.38 × 47,591.83
4. Step 4: Simplify right side
   87,879x = 5,771,573,648.33
5. Step 5: Solve for x
   x = 5,771,573,648.33/87,879
6. Step 6: Final answer
   x = 65,676.37