Finding the Fourth Proportional to 162,756.39, 224,598.60 and 90,156.30

Step by Step Solution

1. Step 1: Write the proportion equation
   162,756.39 : 224,598.60 = 90,156.30 : x
2. Step 2: Convert to fraction form
   162,756.39/224,598.60 = 90,156.30/x
3. Step 3: Cross multiply
   162,756.39x = 224,598.60 × 90,156.30
4. Step 4: Simplify right side
   162,756.39x = 20,248,978,761.18
5. Step 5: Solve for x
   x = 20,248,978,761.18/162,756.39
6. Step 6: Final answer
   x = 124,412.80