Finding the Fourth Proportional to 91,401.81, 137,052.46 and 28,204.68

Step by Step Solution

1. Step 1: Write the proportion equation
   91,401.81 : 137,052.46 = 28,204.68 : x
2. Step 2: Convert to fraction form
   91,401.81/137,052.46 = 28,204.68/x
3. Step 3: Cross multiply
   91,401.81x = 137,052.46 × 28,204.68
4. Step 4: Simplify right side
   91,401.81x = 3,865,520,777.51
5. Step 5: Solve for x
   x = 3,865,520,777.51/91,401.81
6. Step 6: Final answer
   x = 42,291.51