Finding the Fourth Proportional to 140,328.30, 210,345.42 and 65,386.62

Step by Step Solution

1. Step 1: Write the proportion equation
   140,328.30 : 210,345.42 = 65,386.62 : x
2. Step 2: Convert to fraction form
   140,328.30/210,345.42 = 65,386.62/x
3. Step 3: Cross multiply
   140,328.30x = 210,345.42 × 65,386.62
4. Step 4: Simplify right side
   140,328.30x = 13,753,776,046.28
5. Step 5: Solve for x
   x = 13,753,776,046.28/140,328.30
6. Step 6: Final answer
   x = 98,011.42