Finding the Fourth Proportional to 91,494.94, 137,255.53 and 28,320.61

Step by Step Solution

1. Step 1: Write the proportion equation
   91,494.94 : 137,255.53 = 28,320.61 : x
2. Step 2: Convert to fraction form
   91,494.94/137,255.53 = 28,320.61/x
3. Step 3: Cross multiply
   91,494.94x = 137,255.53 × 28,320.61
4. Step 4: Simplify right side
   91,494.94x = 3,887,160,335.47
5. Step 5: Solve for x
   x = 3,887,160,335.47/91,494.94
6. Step 6: Final answer
   x = 42,484.98