Finding the Fourth Proportional to 72,493.30, 108,739.74 and 19,902.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,493.30 : 108,739.74 = 19,902.83 : x
2. Step 2: Convert to fraction form
   72,493.30/108,739.74 = 19,902.83/x
3. Step 3: Cross multiply
   72,493.30x = 108,739.74 × 19,902.83
4. Step 4: Simplify right side
   72,493.30x = 2,164,228,559.46
5. Step 5: Solve for x
   x = 2,164,228,559.46/72,493.30
6. Step 6: Final answer
   x = 29,854.19