Finding the Fourth Proportional to 113,817.98, 170,683.23 and 78,651.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,817.98 : 170,683.23 = 78,651.02 : x
2. Step 2: Convert to fraction form
   113,817.98/170,683.23 = 78,651.02/x
3. Step 3: Cross multiply
   113,817.98x = 170,683.23 × 78,651.02
4. Step 4: Simplify right side
   113,817.98x = 13,424,410,136.39
5. Step 5: Solve for x
   x = 13,424,410,136.39/113,817.98
6. Step 6: Final answer
   x = 117,946.30