Finding the Fourth Proportional to 142,540.47, 213,806.30 and 67,714.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,540.47 : 213,806.30 = 67,714.47 : x
2. Step 2: Convert to fraction form
   142,540.47/213,806.30 = 67,714.47/x
3. Step 3: Cross multiply
   142,540.47x = 213,806.30 × 67,714.47
4. Step 4: Simplify right side
   142,540.47x = 14,477,779,948.59
5. Step 5: Solve for x
   x = 14,477,779,948.59/142,540.47
6. Step 6: Final answer
   x = 101,569.61