Finding the Fourth Proportional to 49,844.42, 68,790.78 and 30,720.32

Step by Step Solution

1. Step 1: Write the proportion equation
   49,844.42 : 68,790.78 = 30,720.32 : x
2. Step 2: Convert to fraction form
   49,844.42/68,790.78 = 30,720.32/x
3. Step 3: Cross multiply
   49,844.42x = 68,790.78 × 30,720.32
4. Step 4: Simplify right side
   49,844.42x = 2,113,274,774.65
5. Step 5: Solve for x
   x = 2,113,274,774.65/49,844.42
6. Step 6: Final answer
   x = 42,397.42