Finding the Fourth Proportional to 82,502.04, 123,636.42 and 40,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82,502.04 : 123,636.42 = 40,978.20 : x
2. Step 2: Convert to fraction form
   82,502.04/123,636.42 = 40,978.20/x
3. Step 3: Cross multiply
   82,502.04x = 123,636.42 × 40,978.20
4. Step 4: Simplify right side
   82,502.04x = 5,066,397,946.04
5. Step 5: Solve for x
   x = 5,066,397,946.04/82,502.04
6. Step 6: Final answer
   x = 61,409.37