Finding the Fourth Proportional to 142,053.46, 213,024.78 and 53,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,053.46 : 213,024.78 = 53,258.50 : x
2. Step 2: Convert to fraction form
   142,053.46/213,024.78 = 53,258.50/x
3. Step 3: Cross multiply
   142,053.46x = 213,024.78 × 53,258.50
4. Step 4: Simplify right side
   142,053.46x = 11,345,380,245.63
5. Step 5: Solve for x
   x = 11,345,380,245.63/142,053.46
6. Step 6: Final answer
   x = 79,866.98