Finding the Fourth Proportional to 91,636.67, 137,476.53 and 28,453.55

Step by Step Solution

1. Step 1: Write the proportion equation
   91,636.67 : 137,476.53 = 28,453.55 : x
2. Step 2: Convert to fraction form
   91,636.67/137,476.53 = 28,453.55/x
3. Step 3: Cross multiply
   91,636.67x = 137,476.53 × 28,453.55
4. Step 4: Simplify right side
   91,636.67x = 3,911,694,632.80
5. Step 5: Solve for x
   x = 3,911,694,632.80/91,636.67
6. Step 6: Final answer
   x = 42,687.00