Finding the Fourth Proportional to 139,557.82, 209,336.82 and 60,628.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,557.82 : 209,336.82 = 60,628.99 : x
2. Step 2: Convert to fraction form
   139,557.82/209,336.82 = 60,628.99/x
3. Step 3: Cross multiply
   139,557.82x = 209,336.82 × 60,628.99
4. Step 4: Simplify right side
   139,557.82x = 12,691,879,966.41
5. Step 5: Solve for x
   x = 12,691,879,966.41/139,557.82
6. Step 6: Final answer
   x = 90,943.52