Finding the Fourth Proportional to 188,680.88, 260,499.12 and 117,136.82

Step by Step Solution

1. Step 1: Write the proportion equation
   188,680.88 : 260,499.12 = 117,136.82 : x
2. Step 2: Convert to fraction form
   188,680.88/260,499.12 = 117,136.82/x
3. Step 3: Cross multiply
   188,680.88x = 260,499.12 × 117,136.82
4. Step 4: Simplify right side
   188,680.88x = 30,514,038,529.60
5. Step 5: Solve for x
   x = 30,514,038,529.60/188,680.88
6. Step 6: Final answer
   x = 161,723.00