Finding the Fourth Proportional to 72,463.51, 108,695.99 and 19,872.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,463.51 : 108,695.99 = 19,872.96 : x
2. Step 2: Convert to fraction form
   72,463.51/108,695.99 = 19,872.96/x
3. Step 3: Cross multiply
   72,463.51x = 108,695.99 × 19,872.96
4. Step 4: Simplify right side
   72,463.51x = 2,160,111,061.43
5. Step 5: Solve for x
   x = 2,160,111,061.43/72,463.51
6. Step 6: Final answer
   x = 29,809.64