Finding the Fourth Proportional to 91,546.88, 137,339.91 and 28,365.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,546.88 : 137,339.91 = 28,365.60 : x
2. Step 2: Convert to fraction form
   91,546.88/137,339.91 = 28,365.60/x
3. Step 3: Cross multiply
   91,546.88x = 137,339.91 × 28,365.60
4. Step 4: Simplify right side
   91,546.88x = 3,895,728,951.10
5. Step 5: Solve for x
   x = 3,895,728,951.10/91,546.88
6. Step 6: Final answer
   x = 42,554.47