Finding the Fourth Proportional to 72,498.96, 108,735.48 and 19,191.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,498.96 : 108,735.48 = 19,191.24 : x
2. Step 2: Convert to fraction form
   72,498.96/108,735.48 = 19,191.24/x
3. Step 3: Cross multiply
   72,498.96x = 108,735.48 × 19,191.24
4. Step 4: Simplify right side
   72,498.96x = 2,086,768,693.20
5. Step 5: Solve for x
   x = 2,086,768,693.20/72,498.96
6. Step 6: Final answer
   x = 28,783.43