Finding the Fourth Proportional to 72,390.51, 108,548.73 and 30,259.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,390.51 : 108,548.73 = 30,259.09 : x
2. Step 2: Convert to fraction form
   72,390.51/108,548.73 = 30,259.09/x
3. Step 3: Cross multiply
   72,390.51x = 108,548.73 × 30,259.09
4. Step 4: Simplify right side
   72,390.51x = 3,284,585,790.46
5. Step 5: Solve for x
   x = 3,284,585,790.46/72,390.51
6. Step 6: Final answer
   x = 45,373.15