Finding the Fourth Proportional to 75,411.49, 113,131.82 and 28,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   75,411.49 : 113,131.82 = 28,660.72 : x
2. Step 2: Convert to fraction form
   75,411.49/113,131.82 = 28,660.72/x
3. Step 3: Cross multiply
   75,411.49x = 113,131.82 × 28,660.72
4. Step 4: Simplify right side
   75,411.49x = 3,242,439,272.81
5. Step 5: Solve for x
   x = 3,242,439,272.81/75,411.49
6. Step 6: Final answer
   x = 42,996.62