Finding the Fourth Proportional to 139,514.05, 209,148.28 and 55,333.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,514.05 : 209,148.28 = 55,333.32 : x
2. Step 2: Convert to fraction form
   139,514.05/209,148.28 = 55,333.32/x
3. Step 3: Cross multiply
   139,514.05x = 209,148.28 × 55,333.32
4. Step 4: Simplify right side
   139,514.05x = 11,572,868,093.30
5. Step 5: Solve for x
   x = 11,572,868,093.30/139,514.05
6. Step 6: Final answer
   x = 82,951.27