Finding the Fourth Proportional to 139,846.08, 209,952.06 and 83,023.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,846.08 : 209,952.06 = 83,023.72 : x
2. Step 2: Convert to fraction form
   139,846.08/209,952.06 = 83,023.72/x
3. Step 3: Cross multiply
   139,846.08x = 209,952.06 × 83,023.72
4. Step 4: Simplify right side
   139,846.08x = 17,431,001,042.86
5. Step 5: Solve for x
   x = 17,431,001,042.86/139,846.08
6. Step 6: Final answer
   x = 124,644.19