Finding the Fourth Proportional to 71,768.40, 107,193.27 and 65,003.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,768.40 : 107,193.27 = 65,003.88 : x
2. Step 2: Convert to fraction form
   71,768.40/107,193.27 = 65,003.88/x
3. Step 3: Cross multiply
   71,768.40x = 107,193.27 × 65,003.88
4. Step 4: Simplify right side
   71,768.40x = 6,967,978,459.89
5. Step 5: Solve for x
   x = 6,967,978,459.89/71,768.40
6. Step 6: Final answer
   x = 97,089.78