Finding the Fourth Proportional to 123,981, 186,646.20 and 112,958.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,981 : 186,646.20 = 112,958.52 : x
2. Step 2: Convert to fraction form
   123,981/186,646.20 = 112,958.52/x
3. Step 3: Cross multiply
   123,981x = 186,646.20 × 112,958.52
4. Step 4: Simplify right side
   123,981x = 21,083,278,515.62
5. Step 5: Solve for x
   x = 21,083,278,515.62/123,981
6. Step 6: Final answer
   x = 170,052.50