Finding the Fourth Proportional to 93,978.72, 140,984.28 and 49,642.56

Step by Step Solution

1. Step 1: Write the proportion equation
   93,978.72 : 140,984.28 = 49,642.56 : x
2. Step 2: Convert to fraction form
   93,978.72/140,984.28 = 49,642.56/x
3. Step 3: Cross multiply
   93,978.72x = 140,984.28 × 49,642.56
4. Step 4: Simplify right side
   93,978.72x = 6,998,820,578.96
5. Step 5: Solve for x
   x = 6,998,820,578.96/93,978.72
6. Step 6: Final answer
   x = 74,472.40