Finding the Fourth Proportional to 49,445.49, 74,208.23 and 28,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   49,445.49 : 74,208.23 = 28,111.31 : x
2. Step 2: Convert to fraction form
   49,445.49/74,208.23 = 28,111.31/x
3. Step 3: Cross multiply
   49,445.49x = 74,208.23 × 28,111.31
4. Step 4: Simplify right side
   49,445.49x = 2,086,090,257.32
5. Step 5: Solve for x
   x = 2,086,090,257.32/49,445.49
6. Step 6: Final answer
   x = 42,189.70