Finding the Fourth Proportional to 270,679.98, 406,076.01 and 81,132.69

Step by Step Solution

1. Step 1: Write the proportion equation
   270,679.98 : 406,076.01 = 81,132.69 : x
2. Step 2: Convert to fraction form
   270,679.98/406,076.01 = 81,132.69/x
3. Step 3: Cross multiply
   270,679.98x = 406,076.01 × 81,132.69
4. Step 4: Simplify right side
   270,679.98x = 32,946,039,035.77
5. Step 5: Solve for x
   x = 32,946,039,035.77/270,679.98
6. Step 6: Final answer
   x = 121,715.83