Finding the Fourth Proportional to 147,514.80, 221,074.50 and 138,066.96

Step by Step Solution

1. Step 1: Write the proportion equation
   147,514.80 : 221,074.50 = 138,066.96 : x
2. Step 2: Convert to fraction form
   147,514.80/221,074.50 = 138,066.96/x
3. Step 3: Cross multiply
   147,514.80x = 221,074.50 × 138,066.96
4. Step 4: Simplify right side
   147,514.80x = 30,523,084,148.52
5. Step 5: Solve for x
   x = 30,523,084,148.52/147,514.80
6. Step 6: Final answer
   x = 206,915.40