Finding the Fourth Proportional to 91,148.84, 136,716.06 and 28,819.88

Step by Step Solution

1. Step 1: Write the proportion equation
   91,148.84 : 136,716.06 = 28,819.88 : x
2. Step 2: Convert to fraction form
   91,148.84/136,716.06 = 28,819.88/x
3. Step 3: Cross multiply
   91,148.84x = 136,716.06 × 28,819.88
4. Step 4: Simplify right side
   91,148.84x = 3,940,140,443.27
5. Step 5: Solve for x
   x = 3,940,140,443.27/91,148.84
6. Step 6: Final answer
   x = 43,227.54