Finding the Fourth Proportional to 149,404, 206,171.52 and 81,419.52

Step by Step Solution

1. Step 1: Write the proportion equation
   149,404 : 206,171.52 = 81,419.52 : x
2. Step 2: Convert to fraction form
   149,404/206,171.52 = 81,419.52/x
3. Step 3: Cross multiply
   149,404x = 206,171.52 × 81,419.52
4. Step 4: Simplify right side
   149,404x = 16,786,386,196.07
5. Step 5: Solve for x
   x = 16,786,386,196.07/149,404
6. Step 6: Final answer
   x = 112,355.67