Finding the Fourth Proportional to 139,755.98, 192,921.19 and 105,773.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,755.98 : 192,921.19 = 105,773.95 : x
2. Step 2: Convert to fraction form
   139,755.98/192,921.19 = 105,773.95/x
3. Step 3: Cross multiply
   139,755.98x = 192,921.19 × 105,773.95
4. Step 4: Simplify right side
   139,755.98x = 20,406,036,876.70
5. Step 5: Solve for x
   x = 20,406,036,876.70/139,755.98
6. Step 6: Final answer
   x = 146,011.90