Finding the Fourth Proportional to 53,643.28, 74,061.12 and 50,296

Step by Step Solution

1. Step 1: Write the proportion equation
   53,643.28 : 74,061.12 = 50,296 : x
2. Step 2: Convert to fraction form
   53,643.28/74,061.12 = 50,296/x
3. Step 3: Cross multiply
   53,643.28x = 74,061.12 × 50,296
4. Step 4: Simplify right side
   53,643.28x = 3,724,978,091.52
5. Step 5: Solve for x
   x = 3,724,978,091.52/53,643.28
6. Step 6: Final answer
   x = 69,439.79