Finding the Fourth Proportional to 140,759.31, 210,991.34 and 65,816.29

Step by Step Solution

1. Step 1: Write the proportion equation
   140,759.31 : 210,991.34 = 65,816.29 : x
2. Step 2: Convert to fraction form
   140,759.31/210,991.34 = 65,816.29/x
3. Step 3: Cross multiply
   140,759.31x = 210,991.34 × 65,816.29
4. Step 4: Simplify right side
   140,759.31x = 13,886,665,836.89
5. Step 5: Solve for x
   x = 13,886,665,836.89/140,759.31
6. Step 6: Final answer
   x = 98,655.40