Finding the Fourth Proportional to 146,065.50, 201,570.39 and 78,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,065.50 : 201,570.39 = 78,997.50 : x
2. Step 2: Convert to fraction form
   146,065.50/201,570.39 = 78,997.50/x
3. Step 3: Cross multiply
   146,065.50x = 201,570.39 × 78,997.50
4. Step 4: Simplify right side
   146,065.50x = 15,923,556,884.03
5. Step 5: Solve for x
   x = 15,923,556,884.03/146,065.50
6. Step 6: Final answer
   x = 109,016.55