Finding the Fourth Proportional to 50,346, 69,477.72 and 27,990

Step by Step Solution

1. Step 1: Write the proportion equation
   50,346 : 69,477.72 = 27,990 : x
2. Step 2: Convert to fraction form
   50,346/69,477.72 = 27,990/x
3. Step 3: Cross multiply
   50,346x = 69,477.72 × 27,990
4. Step 4: Simplify right side
   50,346x = 1,944,681,382.80
5. Step 5: Solve for x
   x = 1,944,681,382.80/50,346
6. Step 6: Final answer
   x = 38,626.33