Finding the Fourth Proportional to 91,045.50, 136,592.55 and 28,716

Step by Step Solution

1. Step 1: Write the proportion equation
   91,045.50 : 136,592.55 = 28,716 : x
2. Step 2: Convert to fraction form
   91,045.50/136,592.55 = 28,716/x
3. Step 3: Cross multiply
   91,045.50x = 136,592.55 × 28,716
4. Step 4: Simplify right side
   91,045.50x = 3,922,391,665.80
5. Step 5: Solve for x
   x = 3,922,391,665.80/91,045.50
6. Step 6: Final answer
   x = 43,081.66