Finding the Fourth Proportional to 81,890.42, 112,968.69 and 50,004.14

Step by Step Solution

1. Step 1: Write the proportion equation
   81,890.42 : 112,968.69 = 50,004.14 : x
2. Step 2: Convert to fraction form
   81,890.42/112,968.69 = 50,004.14/x
3. Step 3: Cross multiply
   81,890.42x = 112,968.69 × 50,004.14
4. Step 4: Simplify right side
   81,890.42x = 5,648,902,190.38
5. Step 5: Solve for x
   x = 5,648,902,190.38/81,890.42
6. Step 6: Final answer
   x = 68,981.23