Finding the Fourth Proportional to 250,290.08, 345,404.80 and 137,105.52

Step by Step Solution

1. Step 1: Write the proportion equation
   250,290.08 : 345,404.80 = 137,105.52 : x
2. Step 2: Convert to fraction form
   250,290.08/345,404.80 = 137,105.52/x
3. Step 3: Cross multiply
   250,290.08x = 345,404.80 × 137,105.52
4. Step 4: Simplify right side
   250,290.08x = 47,356,904,714.50
5. Step 5: Solve for x
   x = 47,356,904,714.50/250,290.08
6. Step 6: Final answer
   x = 189,208.08