Finding the Fourth Proportional to 72,687.07, 109,072.90 and 30,564.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,687.07 : 109,072.90 = 30,564.10 : x
2. Step 2: Convert to fraction form
   72,687.07/109,072.90 = 30,564.10/x
3. Step 3: Cross multiply
   72,687.07x = 109,072.90 × 30,564.10
4. Step 4: Simplify right side
   72,687.07x = 3,333,715,022.89
5. Step 5: Solve for x
   x = 3,333,715,022.89/72,687.07
6. Step 6: Final answer
   x = 45,863.93