Finding the Fourth Proportional to 82,586.79, 123,768.81 and 45,090.54

Step by Step Solution

1. Step 1: Write the proportion equation
   82,586.79 : 123,768.81 = 45,090.54 : x
2. Step 2: Convert to fraction form
   82,586.79/123,768.81 = 45,090.54/x
3. Step 3: Cross multiply
   82,586.79x = 123,768.81 × 45,090.54
4. Step 4: Simplify right side
   82,586.79x = 5,580,802,478.06
5. Step 5: Solve for x
   x = 5,580,802,478.06/82,586.79
6. Step 6: Final answer
   x = 67,575.00