Finding the Fourth Proportional to 72,689.04, 109,033.52 and 19,381.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,689.04 : 109,033.52 = 19,381.04 : x
2. Step 2: Convert to fraction form
   72,689.04/109,033.52 = 19,381.04/x
3. Step 3: Cross multiply
   72,689.04x = 109,033.52 × 19,381.04
4. Step 4: Simplify right side
   72,689.04x = 2,113,183,012.46
5. Step 5: Solve for x
   x = 2,113,183,012.46/72,689.04
6. Step 6: Final answer
   x = 29,071.55