Finding the Fourth Proportional to 162,816.60, 224,684.28 and 91,196.40

Step by Step Solution

1. Step 1: Write the proportion equation
   162,816.60 : 224,684.28 = 91,196.40 : x
2. Step 2: Convert to fraction form
   162,816.60/224,684.28 = 91,196.40/x
3. Step 3: Cross multiply
   162,816.60x = 224,684.28 × 91,196.40
4. Step 4: Simplify right side
   162,816.60x = 20,490,397,472.59
5. Step 5: Solve for x
   x = 20,490,397,472.59/162,816.60
6. Step 6: Final answer
   x = 125,849.56