Finding the Fourth Proportional to 74,144.16, 102,280.80 and 50,262.72

Step by Step Solution

1. Step 1: Write the proportion equation
   74,144.16 : 102,280.80 = 50,262.72 : x
2. Step 2: Convert to fraction form
   74,144.16/102,280.80 = 50,262.72/x
3. Step 3: Cross multiply
   74,144.16x = 102,280.80 × 50,262.72
4. Step 4: Simplify right side
   74,144.16x = 5,140,911,211.78
5. Step 5: Solve for x
   x = 5,140,911,211.78/74,144.16
6. Step 6: Final answer
   x = 69,336.70