Finding the Fourth Proportional to 88,105.50, 121,585.95 and 47,819.31

Step by Step Solution

1. Step 1: Write the proportion equation
   88,105.50 : 121,585.95 = 47,819.31 : x
2. Step 2: Convert to fraction form
   88,105.50/121,585.95 = 47,819.31/x
3. Step 3: Cross multiply
   88,105.50x = 121,585.95 × 47,819.31
4. Step 4: Simplify right side
   88,105.50x = 5,814,155,995.60
5. Step 5: Solve for x
   x = 5,814,155,995.60/88,105.50
6. Step 6: Final answer
   x = 65,990.84