Finding the Fourth Proportional to 83,072.47, 124,608.69 and 45,869.09

Step by Step Solution

1. Step 1: Write the proportion equation
   83,072.47 : 124,608.69 = 45,869.09 : x
2. Step 2: Convert to fraction form
   83,072.47/124,608.69 = 45,869.09/x
3. Step 3: Cross multiply
   83,072.47x = 124,608.69 × 45,869.09
4. Step 4: Simplify right side
   83,072.47x = 5,715,687,527.91
5. Step 5: Solve for x
   x = 5,715,687,527.91/83,072.47
6. Step 6: Final answer
   x = 68,803.63