Finding the Fourth Proportional to 250,080.38, 374,931.91 and 81,500.04

Step by Step Solution

1. Step 1: Write the proportion equation
   250,080.38 : 374,931.91 = 81,500.04 : x
2. Step 2: Convert to fraction form
   250,080.38/374,931.91 = 81,500.04/x
3. Step 3: Cross multiply
   250,080.38x = 374,931.91 × 81,500.04
4. Step 4: Simplify right side
   250,080.38x = 30,556,965,764.15
5. Step 5: Solve for x
   x = 30,556,965,764.15/250,080.38
6. Step 6: Final answer
   x = 122,188.58