Finding the Fourth Proportional to 162,978.62, 224,919.95 and 91,381.68

Step by Step Solution

1. Step 1: Write the proportion equation
   162,978.62 : 224,919.95 = 91,381.68 : x
2. Step 2: Convert to fraction form
   162,978.62/224,919.95 = 91,381.68/x
3. Step 3: Cross multiply
   162,978.62x = 224,919.95 × 91,381.68
4. Step 4: Simplify right side
   162,978.62x = 20,553,562,439.61
5. Step 5: Solve for x
   x = 20,553,562,439.61/162,978.62
6. Step 6: Final answer
   x = 126,112.02