Finding the Fourth Proportional to 304,485.91, 456,603.98 and 91,178.69

Step by Step Solution

1. Step 1: Write the proportion equation
   304,485.91 : 456,603.98 = 91,178.69 : x
2. Step 2: Convert to fraction form
   304,485.91/456,603.98 = 91,178.69/x
3. Step 3: Cross multiply
   304,485.91x = 456,603.98 × 91,178.69
4. Step 4: Simplify right side
   304,485.91x = 41,632,550,006.27
5. Step 5: Solve for x
   x = 41,632,550,006.27/304,485.91
6. Step 6: Final answer
   x = 136,730.63