Finding the Fourth Proportional to 142,650, 213,974.76 and 42,810

Step by Step Solution

1. Step 1: Write the proportion equation
   142,650 : 213,974.76 = 42,810 : x
2. Step 2: Convert to fraction form
   142,650/213,974.76 = 42,810/x
3. Step 3: Cross multiply
   142,650x = 213,974.76 × 42,810
4. Step 4: Simplify right side
   142,650x = 9,160,259,475.60
5. Step 5: Solve for x
   x = 9,160,259,475.60/142,650
6. Step 6: Final answer
   x = 64,214.93