Finding the Fourth Proportional to 82,677.79, 123,918.27 and 57,581.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82,677.79 : 123,918.27 = 57,581.98 : x
2. Step 2: Convert to fraction form
   82,677.79/123,918.27 = 57,581.98/x
3. Step 3: Cross multiply
   82,677.79x = 123,918.27 × 57,581.98
4. Step 4: Simplify right side
   82,677.79x = 7,135,459,344.77
5. Step 5: Solve for x
   x = 7,135,459,344.77/82,677.79
6. Step 6: Final answer
   x = 86,304.43