Finding the Fourth Proportional to 139,879.94, 210,002.82 and 83,057.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,879.94 : 210,002.82 = 83,057.60 : x
2. Step 2: Convert to fraction form
   139,879.94/210,002.82 = 83,057.60/x
3. Step 3: Cross multiply
   139,879.94x = 210,002.82 × 83,057.60
4. Step 4: Simplify right side
   139,879.94x = 17,442,330,222.43
5. Step 5: Solve for x
   x = 17,442,330,222.43/139,879.94
6. Step 6: Final answer
   x = 124,695.01