Finding the Fourth Proportional to 138,583.56, 207,781.94 and 111,962.30

Step by Step Solution

1. Step 1: Write the proportion equation
   138,583.56 : 207,781.94 = 111,962.30 : x
2. Step 2: Convert to fraction form
   138,583.56/207,781.94 = 111,962.30/x
3. Step 3: Cross multiply
   138,583.56x = 207,781.94 × 111,962.30
4. Step 4: Simplify right side
   138,583.56x = 23,263,743,900.86
5. Step 5: Solve for x
   x = 23,263,743,900.86/138,583.56
6. Step 6: Final answer
   x = 167,867.99