Finding the Fourth Proportional to 139,879.96, 210,002.84 and 83,057.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,879.96 : 210,002.84 = 83,057.56 : x
2. Step 2: Convert to fraction form
   139,879.96/210,002.84 = 83,057.56/x
3. Step 3: Cross multiply
   139,879.96x = 210,002.84 × 83,057.56
4. Step 4: Simplify right side
   139,879.96x = 17,442,323,483.47
5. Step 5: Solve for x
   x = 17,442,323,483.47/139,879.96
6. Step 6: Final answer
   x = 124,694.94