Finding the Fourth Proportional to 81,179.94, 121,714.83 and 28,582.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,179.94 : 121,714.83 = 28,582.50 : x
2. Step 2: Convert to fraction form
   81,179.94/121,714.83 = 28,582.50/x
3. Step 3: Cross multiply
   81,179.94x = 121,714.83 × 28,582.50
4. Step 4: Simplify right side
   81,179.94x = 3,478,914,128.48
5. Step 5: Solve for x
   x = 3,478,914,128.48/81,179.94
6. Step 6: Final answer
   x = 42,854.36