Finding the Fourth Proportional to 142,616.30, 213,911.69 and 42,798.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,616.30 : 213,911.69 = 42,798.78 : x
2. Step 2: Convert to fraction form
   142,616.30/213,911.69 = 42,798.78/x
3. Step 3: Cross multiply
   142,616.30x = 213,911.69 × 42,798.78
4. Step 4: Simplify right side
   142,616.30x = 9,155,159,145.74
5. Step 5: Solve for x
   x = 9,155,159,145.74/142,616.30
6. Step 6: Final answer
   x = 64,194.34