Finding the Fourth Proportional to 142,054.27, 213,025.74 and 53,259.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142,054.27 : 213,025.74 = 53,259.37 : x
2. Step 2: Convert to fraction form
   142,054.27/213,025.74 = 53,259.37/x
3. Step 3: Cross multiply
   142,054.27x = 213,025.74 × 53,259.37
4. Step 4: Simplify right side
   142,054.27x = 11,345,616,706.18
5. Step 5: Solve for x
   x = 11,345,616,706.18/142,054.27
6. Step 6: Final answer
   x = 79,868.18