Finding the Fourth Proportional to 162,140, 223,748.84 and 90,518

Step by Step Solution

1. Step 1: Write the proportion equation
   162,140 : 223,748.84 = 90,518 : x
2. Step 2: Convert to fraction form
   162,140/223,748.84 = 90,518/x
3. Step 3: Cross multiply
   162,140x = 223,748.84 × 90,518
4. Step 4: Simplify right side
   162,140x = 20,253,297,499.12
5. Step 5: Solve for x
   x = 20,253,297,499.12/162,140
6. Step 6: Final answer
   x = 124,912.41