Finding the Fourth Proportional to 139,987.02, 210,022.92 and 50,017.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,987.02 : 210,022.92 = 50,017.95 : x
2. Step 2: Convert to fraction form
   139,987.02/210,022.92 = 50,017.95/x
3. Step 3: Cross multiply
   139,987.02x = 210,022.92 × 50,017.95
4. Step 4: Simplify right side
   139,987.02x = 10,504,915,911.41
5. Step 5: Solve for x
   x = 10,504,915,911.41/139,987.02
6. Step 6: Final answer
   x = 75,042.07