Finding the Fourth Proportional to 140,008.59, 210,011.99 and 83,864.66

Step by Step Solution

1. Step 1: Write the proportion equation
   140,008.59 : 210,011.99 = 83,864.66 : x
2. Step 2: Convert to fraction form
   140,008.59/210,011.99 = 83,864.66/x
3. Step 3: Cross multiply
   140,008.59x = 210,011.99 × 83,864.66
4. Step 4: Simplify right side
   140,008.59x = 17,612,582,667.89
5. Step 5: Solve for x
   x = 17,612,582,667.89/140,008.59
6. Step 6: Final answer
   x = 125,796.44