Finding the Fourth Proportional to 139,992.41, 209,910.72 and 83,089.44

Step by Step Solution

1. Step 1: Write the proportion equation
   139,992.41 : 209,910.72 = 83,089.44 : x
2. Step 2: Convert to fraction form
   139,992.41/209,910.72 = 83,089.44/x
3. Step 3: Cross multiply
   139,992.41x = 209,910.72 × 83,089.44
4. Step 4: Simplify right side
   139,992.41x = 17,441,364,174.80
5. Step 5: Solve for x
   x = 17,441,364,174.80/139,992.41
6. Step 6: Final answer
   x = 124,587.93