Finding the Fourth Proportional to 139,846.25, 209,952.30 and 83,023.89

Step by Step Solution

1. Step 1: Write the proportion equation
   139,846.25 : 209,952.30 = 83,023.89 : x
2. Step 2: Convert to fraction form
   139,846.25/209,952.30 = 83,023.89/x
3. Step 3: Cross multiply
   139,846.25x = 209,952.30 × 83,023.89
4. Step 4: Simplify right side
   139,846.25x = 17,431,056,184.47
5. Step 5: Solve for x
   x = 17,431,056,184.47/139,846.25
6. Step 6: Final answer
   x = 124,644.43