Finding the Fourth Proportional to 72,521.76, 108,783.84 and 19,930.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,521.76 : 108,783.84 = 19,930.92 : x
2. Step 2: Convert to fraction form
   72,521.76/108,783.84 = 19,930.92/x
3. Step 3: Cross multiply
   72,521.76x = 108,783.84 × 19,930.92
4. Step 4: Simplify right side
   72,521.76x = 2,168,162,012.33
5. Step 5: Solve for x
   x = 2,168,162,012.33/72,521.76
6. Step 6: Final answer
   x = 29,896.71