Finding the Fourth Proportional to 139,882.48, 209,885.73 and 73,306.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,882.48 : 209,885.73 = 73,306.78 : x
2. Step 2: Convert to fraction form
   139,882.48/209,885.73 = 73,306.78/x
3. Step 3: Cross multiply
   139,882.48x = 209,885.73 × 73,306.78
4. Step 4: Simplify right side
   139,882.48x = 15,386,047,034.25
5. Step 5: Solve for x
   x = 15,386,047,034.25/139,882.48
6. Step 6: Final answer
   x = 109,992.67