Finding the Fourth Proportional to 139,273.63, 208,772.05 and 83,029.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,273.63 : 208,772.05 = 83,029.46 : x
2. Step 2: Convert to fraction form
   139,273.63/208,772.05 = 83,029.46/x
3. Step 3: Cross multiply
   139,273.63x = 208,772.05 × 83,029.46
4. Step 4: Simplify right side
   139,273.63x = 17,334,229,128.56
5. Step 5: Solve for x
   x = 17,334,229,128.56/139,273.63
6. Step 6: Final answer
   x = 124,461.68