Finding the Fourth Proportional to 89,788.50, 134,683.43 and 39,855.17

Step by Step Solution

1. Step 1: Write the proportion equation
   89,788.50 : 134,683.43 = 39,855.17 : x
2. Step 2: Convert to fraction form
   89,788.50/134,683.43 = 39,855.17/x
3. Step 3: Cross multiply
   89,788.50x = 134,683.43 × 39,855.17
4. Step 4: Simplify right side
   89,788.50x = 5,367,831,136.27
5. Step 5: Solve for x
   x = 5,367,831,136.27/89,788.50
6. Step 6: Final answer
   x = 59,783.06