Finding the Fourth Proportional to 142,411.80, 213,636.90 and 48,946.20

Step by Step Solution

1. Step 1: Write the proportion equation
   142,411.80 : 213,636.90 = 48,946.20 : x
2. Step 2: Convert to fraction form
   142,411.80/213,636.90 = 48,946.20/x
3. Step 3: Cross multiply
   142,411.80x = 213,636.90 × 48,946.20
4. Step 4: Simplify right side
   142,411.80x = 10,456,714,434.78
5. Step 5: Solve for x
   x = 10,456,714,434.78/142,411.80
6. Step 6: Final answer
   x = 73,425.90