Finding the Fourth Proportional to 139,760.82, 209,504.52 and 55,492.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,760.82 : 209,504.52 = 55,492.95 : x
2. Step 2: Convert to fraction form
   139,760.82/209,504.52 = 55,492.95/x
3. Step 3: Cross multiply
   139,760.82x = 209,504.52 × 55,492.95
4. Step 4: Simplify right side
   139,760.82x = 11,626,023,853.13
5. Step 5: Solve for x
   x = 11,626,023,853.13/139,760.82
6. Step 6: Final answer
   x = 83,185.14