Finding the Fourth Proportional to 139,880.07, 210,003.02 and 83,057.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,880.07 : 210,003.02 = 83,057.73 : x
2. Step 2: Convert to fraction form
   139,880.07/210,003.02 = 83,057.73/x
3. Step 3: Cross multiply
   139,880.07x = 210,003.02 × 83,057.73
4. Step 4: Simplify right side
   139,880.07x = 17,442,374,134.34
5. Step 5: Solve for x
   x = 17,442,374,134.34/139,880.07
6. Step 6: Final answer
   x = 124,695.21