Finding the Fourth Proportional to 49,878.72, 74,274.90 and 49,326.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,878.72 : 74,274.90 = 49,326.50 : x
2. Step 2: Convert to fraction form
   49,878.72/74,274.90 = 49,326.50/x
3. Step 3: Cross multiply
   49,878.72x = 74,274.90 × 49,326.50
4. Step 4: Simplify right side
   49,878.72x = 3,663,720,608.22
5. Step 5: Solve for x
   x = 3,663,720,608.22/49,878.72
6. Step 6: Final answer
   x = 73,452.58