Finding the Fourth Proportional to 151,716.16, 209,300.52 and 91,251.28

Step by Step Solution

1. Step 1: Write the proportion equation
   151,716.16 : 209,300.52 = 91,251.28 : x
2. Step 2: Convert to fraction form
   151,716.16/209,300.52 = 91,251.28/x
3. Step 3: Cross multiply
   151,716.16x = 209,300.52 × 91,251.28
4. Step 4: Simplify right side
   151,716.16x = 19,098,940,354.67
5. Step 5: Solve for x
   x = 19,098,940,354.67/151,716.16
6. Step 6: Final answer
   x = 125,886.00