Finding the Fourth Proportional to 328,131.90, 492,208.83 and 91,454.76

Step by Step Solution

1. Step 1: Write the proportion equation
   328,131.90 : 492,208.83 = 91,454.76 : x
2. Step 2: Convert to fraction form
   328,131.90/492,208.83 = 91,454.76/x
3. Step 3: Cross multiply
   328,131.90x = 492,208.83 × 91,454.76
4. Step 4: Simplify right side
   328,131.90x = 45,014,840,417.53
5. Step 5: Solve for x
   x = 45,014,840,417.53/328,131.90
6. Step 6: Final answer
   x = 137,185.20