Finding the Fourth Proportional to 57,136.50, 78,848.37 and 31,986.18

Step by Step Solution

1. Step 1: Write the proportion equation
   57,136.50 : 78,848.37 = 31,986.18 : x
2. Step 2: Convert to fraction form
   57,136.50/78,848.37 = 31,986.18/x
3. Step 3: Cross multiply
   57,136.50x = 78,848.37 × 31,986.18
4. Step 4: Simplify right side
   57,136.50x = 2,522,058,155.53
5. Step 5: Solve for x
   x = 2,522,058,155.53/57,136.50
6. Step 6: Final answer
   x = 44,140.93