Finding the Fourth Proportional to 72,987.65, 109,472.04 and 23,072.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,987.65 : 109,472.04 = 23,072.78 : x
2. Step 2: Convert to fraction form
   72,987.65/109,472.04 = 23,072.78/x
3. Step 3: Cross multiply
   72,987.65x = 109,472.04 × 23,072.78
4. Step 4: Simplify right side
   72,987.65x = 2,525,823,747.71
5. Step 5: Solve for x
   x = 2,525,823,747.71/72,987.65
6. Step 6: Final answer
   x = 34,606.18