Finding the Fourth Proportional to 139,519.94, 209,275.21 and 60,634.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,519.94 : 209,275.21 = 60,634.17 : x
2. Step 2: Convert to fraction form
   139,519.94/209,275.21 = 60,634.17/x
3. Step 3: Cross multiply
   139,519.94x = 209,275.21 × 60,634.17
4. Step 4: Simplify right side
   139,519.94x = 12,689,228,735.72
5. Step 5: Solve for x
   x = 12,689,228,735.72/139,519.94
6. Step 6: Final answer
   x = 90,949.22