Finding the Fourth Proportional to 91,358.54, 137,061.45 and 28,177.27

Step by Step Solution

1. Step 1: Write the proportion equation
   91,358.54 : 137,061.45 = 28,177.27 : x
2. Step 2: Convert to fraction form
   91,358.54/137,061.45 = 28,177.27/x
3. Step 3: Cross multiply
   91,358.54x = 137,061.45 × 28,177.27
4. Step 4: Simplify right side
   91,358.54x = 3,862,017,140.59
5. Step 5: Solve for x
   x = 3,862,017,140.59/91,358.54
6. Step 6: Final answer
   x = 42,273.19