Finding the Fourth Proportional to 56,781.81, 85,111.56 and 27,136.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,781.81 : 85,111.56 = 27,136.62 : x
2. Step 2: Convert to fraction form
   56,781.81/85,111.56 = 27,136.62/x
3. Step 3: Cross multiply
   56,781.81x = 85,111.56 × 27,136.62
4. Step 4: Simplify right side
   56,781.81x = 2,309,640,061.33
5. Step 5: Solve for x
   x = 2,309,640,061.33/56,781.81
6. Step 6: Final answer
   x = 40,675.70