Finding the Fourth Proportional to 58,271.49, 80,719.23 and 57,090.51

Step by Step Solution

1. Step 1: Write the proportion equation
   58,271.49 : 80,719.23 = 57,090.51 : x
2. Step 2: Convert to fraction form
   58,271.49/80,719.23 = 57,090.51/x
3. Step 3: Cross multiply
   58,271.49x = 80,719.23 × 57,090.51
4. Step 4: Simplify right side
   58,271.49x = 4,608,302,007.51
5. Step 5: Solve for x
   x = 4,608,302,007.51/58,271.49
6. Step 6: Final answer
   x = 79,083.30