Finding the Fourth Proportional to 91,495.94, 137,257.03 and 28,321.61

Step by Step Solution

1. Step 1: Write the proportion equation
   91,495.94 : 137,257.03 = 28,321.61 : x
2. Step 2: Convert to fraction form
   91,495.94/137,257.03 = 28,321.61/x
3. Step 3: Cross multiply
   91,495.94x = 137,257.03 × 28,321.61
4. Step 4: Simplify right side
   91,495.94x = 3,887,340,073.42
5. Step 5: Solve for x
   x = 3,887,340,073.42/91,495.94
6. Step 6: Final answer
   x = 42,486.48