Finding the Fourth Proportional to 146,780.10, 202,540.50 and 86,370.30

Step by Step Solution

1. Step 1: Write the proportion equation
   146,780.10 : 202,540.50 = 86,370.30 : x
2. Step 2: Convert to fraction form
   146,780.10/202,540.50 = 86,370.30/x
3. Step 3: Cross multiply
   146,780.10x = 202,540.50 × 86,370.30
4. Step 4: Simplify right side
   146,780.10x = 17,493,483,747.15
5. Step 5: Solve for x
   x = 17,493,483,747.15/146,780.10
6. Step 6: Final answer
   x = 119,181.58