Finding the Fourth Proportional to 328,141.89, 492,214.86 and 91,486.62

Step by Step Solution

1. Step 1: Write the proportion equation
   328,141.89 : 492,214.86 = 91,486.62 : x
2. Step 2: Convert to fraction form
   328,141.89/492,214.86 = 91,486.62/x
3. Step 3: Cross multiply
   328,141.89x = 492,214.86 × 91,486.62
4. Step 4: Simplify right side
   328,141.89x = 45,031,073,855.17
5. Step 5: Solve for x
   x = 45,031,073,855.17/328,141.89
6. Step 6: Final answer
   x = 137,230.49