Finding the Fourth Proportional to 113,811.48, 170,673.48 and 78,644.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,811.48 : 170,673.48 = 78,644.52 : x
2. Step 2: Convert to fraction form
   113,811.48/170,673.48 = 78,644.52/x
3. Step 3: Cross multiply
   113,811.48x = 170,673.48 × 78,644.52
4. Step 4: Simplify right side
   113,811.48x = 13,422,533,911.33
5. Step 5: Solve for x
   x = 13,422,533,911.33/113,811.48
6. Step 6: Final answer
   x = 117,936.56