Finding the Fourth Proportional to 49,543.72, 74,249.88 and 42,938.98

Step by Step Solution

1. Step 1: Write the proportion equation
   49,543.72 : 74,249.88 = 42,938.98 : x
2. Step 2: Convert to fraction form
   49,543.72/74,249.88 = 42,938.98/x
3. Step 3: Cross multiply
   49,543.72x = 74,249.88 × 42,938.98
4. Step 4: Simplify right side
   49,543.72x = 3,188,214,112.32
5. Step 5: Solve for x
   x = 3,188,214,112.32/49,543.72
6. Step 6: Final answer
   x = 64,351.53