Finding the Fourth Proportional to 142,421.60, 213,636.72 and 48,926

Step by Step Solution

1. Step 1: Write the proportion equation
   142,421.60 : 213,636.72 = 48,926 : x
2. Step 2: Convert to fraction form
   142,421.60/213,636.72 = 48,926/x
3. Step 3: Cross multiply
   142,421.60x = 213,636.72 × 48,926
4. Step 4: Simplify right side
   142,421.60x = 10,452,390,162.72
5. Step 5: Solve for x
   x = 10,452,390,162.72/142,421.60
6. Step 6: Final answer
   x = 73,390.48