Finding the Fourth Proportional to 45,131.47, 67,736.09 and 21,777.55

Step by Step Solution

1. Step 1: Write the proportion equation
   45,131.47 : 67,736.09 = 21,777.55 : x
2. Step 2: Convert to fraction form
   45,131.47/67,736.09 = 21,777.55/x
3. Step 3: Cross multiply
   45,131.47x = 67,736.09 × 21,777.55
4. Step 4: Simplify right side
   45,131.47x = 1,475,126,086.78
5. Step 5: Solve for x
   x = 1,475,126,086.78/45,131.47
6. Step 6: Final answer
   x = 32,685.09