Finding the Fourth Proportional to 142,401.30, 213,429.15 and 63,431.70

Step by Step Solution

1. Step 1: Write the proportion equation
   142,401.30 : 213,429.15 = 63,431.70 : x
2. Step 2: Convert to fraction form
   142,401.30/213,429.15 = 63,431.70/x
3. Step 3: Cross multiply
   142,401.30x = 213,429.15 × 63,431.70
4. Step 4: Simplify right side
   142,401.30x = 13,538,173,814.06
5. Step 5: Solve for x
   x = 13,538,173,814.06/142,401.30
6. Step 6: Final answer
   x = 95,070.58