Finding the Fourth Proportional to 139,957.98, 209,928.33 and 56,849.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,957.98 : 209,928.33 = 56,849.82 : x
2. Step 2: Convert to fraction form
   139,957.98/209,928.33 = 56,849.82/x
3. Step 3: Cross multiply
   139,957.98x = 209,928.33 × 56,849.82
4. Step 4: Simplify right side
   139,957.98x = 11,934,387,773.40
5. Step 5: Solve for x
   x = 11,934,387,773.40/139,957.98
6. Step 6: Final answer
   x = 85,271.22