Finding the Fourth Proportional to 142,353.81, 213,487.59 and 74,849.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,353.81 : 213,487.59 = 74,849.48 : x
2. Step 2: Convert to fraction form
   142,353.81/213,487.59 = 74,849.48/x
3. Step 3: Cross multiply
   142,353.81x = 213,487.59 × 74,849.48
4. Step 4: Simplify right side
   142,353.81x = 15,979,433,656.27
5. Step 5: Solve for x
   x = 15,979,433,656.27/142,353.81
6. Step 6: Final answer
   x = 112,251.53