Finding the Fourth Proportional to 139,876.07, 209,997.01 and 83,053.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,876.07 : 209,997.01 = 83,053.73 : x
2. Step 2: Convert to fraction form
   139,876.07/209,997.01 = 83,053.73/x
3. Step 3: Cross multiply
   139,876.07x = 209,997.01 × 83,053.73
4. Step 4: Simplify right side
   139,876.07x = 17,441,033,711.73
5. Step 5: Solve for x
   x = 17,441,033,711.73/139,876.07
6. Step 6: Final answer
   x = 124,689.19