Finding the Fourth Proportional to 60,797.72, 91,228.69 and 43,142.47

Step by Step Solution

1. Step 1: Write the proportion equation
   60,797.72 : 91,228.69 = 43,142.47 : x
2. Step 2: Convert to fraction form
   60,797.72/91,228.69 = 43,142.47/x
3. Step 3: Cross multiply
   60,797.72x = 91,228.69 × 43,142.47
4. Step 4: Simplify right side
   60,797.72x = 3,935,831,021.46
5. Step 5: Solve for x
   x = 3,935,831,021.46/60,797.72
6. Step 6: Final answer
   x = 64,736.49