Finding the Fourth Proportional to 328,078.32, 492,061.68 and 91,444.56

Step by Step Solution

1. Step 1: Write the proportion equation
   328,078.32 : 492,061.68 = 91,444.56 : x
2. Step 2: Convert to fraction form
   328,078.32/492,061.68 = 91,444.56/x
3. Step 3: Cross multiply
   328,078.32x = 492,061.68 × 91,444.56
4. Step 4: Simplify right side
   328,078.32x = 44,996,363,820.46
5. Step 5: Solve for x
   x = 44,996,363,820.46/328,078.32
6. Step 6: Final answer
   x = 137,151.29