Finding the Fourth Proportional to 91,046.43, 137,298.24 and 89,799.84

Step by Step Solution

1. Step 1: Write the proportion equation
   91,046.43 : 137,298.24 = 89,799.84 : x
2. Step 2: Convert to fraction form
   91,046.43/137,298.24 = 89,799.84/x
3. Step 3: Cross multiply
   91,046.43x = 137,298.24 × 89,799.84
4. Step 4: Simplify right side
   91,046.43x = 12,329,359,984.28
5. Step 5: Solve for x
   x = 12,329,359,984.28/91,046.43
6. Step 6: Final answer
   x = 135,418.38