Finding the Fourth Proportional to 91,546.38, 137,339.16 and 28,365.10

Step by Step Solution

1. Step 1: Write the proportion equation
   91,546.38 : 137,339.16 = 28,365.10 : x
2. Step 2: Convert to fraction form
   91,546.38/137,339.16 = 28,365.10/x
3. Step 3: Cross multiply
   91,546.38x = 137,339.16 × 28,365.10
4. Step 4: Simplify right side
   91,546.38x = 3,895,638,717.15
5. Step 5: Solve for x
   x = 3,895,638,717.15/91,546.38
6. Step 6: Final answer
   x = 42,553.72