Finding the Fourth Proportional to 139,558.32, 209,337.57 and 60,629.49

Step by Step Solution

1. Step 1: Write the proportion equation
   139,558.32 : 209,337.57 = 60,629.49 : x
2. Step 2: Convert to fraction form
   139,558.32/209,337.57 = 60,629.49/x
3. Step 3: Cross multiply
   139,558.32x = 209,337.57 × 60,629.49
4. Step 4: Simplify right side
   139,558.32x = 12,692,030,106.94
5. Step 5: Solve for x
   x = 12,692,030,106.94/139,558.32
6. Step 6: Final answer
   x = 90,944.27