Finding the Fourth Proportional to 71,783.89, 99,064.02 and 39,080.51

Step by Step Solution

1. Step 1: Write the proportion equation
   71,783.89 : 99,064.02 = 39,080.51 : x
2. Step 2: Convert to fraction form
   71,783.89/99,064.02 = 39,080.51/x
3. Step 3: Cross multiply
   71,783.89x = 99,064.02 × 39,080.51
4. Step 4: Simplify right side
   71,783.89x = 3,871,472,425.06
5. Step 5: Solve for x
   x = 3,871,472,425.06/71,783.89
6. Step 6: Final answer
   x = 53,932.33