Finding the Fourth Proportional to 72,564.23, 108,888.38 and 30,440.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,564.23 : 108,888.38 = 30,440.55 : x
2. Step 2: Convert to fraction form
   72,564.23/108,888.38 = 30,440.55/x
3. Step 3: Cross multiply
   72,564.23x = 108,888.38 × 30,440.55
4. Step 4: Simplify right side
   72,564.23x = 3,314,622,175.81
5. Step 5: Solve for x
   x = 3,314,622,175.81/72,564.23
6. Step 6: Final answer
   x = 45,678.46