Finding the Fourth Proportional to 78,826.24, 108,595.38 and 54,909.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,826.24 : 108,595.38 = 54,909.64 : x
2. Step 2: Convert to fraction form
   78,826.24/108,595.38 = 54,909.64/x
3. Step 3: Cross multiply
   78,826.24x = 108,595.38 × 54,909.64
4. Step 4: Simplify right side
   78,826.24x = 5,962,933,221.46
5. Step 5: Solve for x
   x = 5,962,933,221.46/78,826.24
6. Step 6: Final answer
   x = 75,646.55