Finding the Fourth Proportional to 139,462.58, 209,110.71 and 55,234.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,462.58 : 209,110.71 = 55,234.83 : x
2. Step 2: Convert to fraction form
   139,462.58/209,110.71 = 55,234.83/x
3. Step 3: Cross multiply
   139,462.58x = 209,110.71 × 55,234.83
4. Step 4: Simplify right side
   139,462.58x = 11,550,194,333.08
5. Step 5: Solve for x
   x = 11,550,194,333.08/139,462.58
6. Step 6: Final answer
   x = 82,819.31