Finding the Fourth Proportional to 158,021.69, 218,090.00 and 90,063.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,021.69 : 218,090.00 = 90,063.10 : x
2. Step 2: Convert to fraction form
   158,021.69/218,090.00 = 90,063.10/x
3. Step 3: Cross multiply
   158,021.69x = 218,090.00 × 90,063.10
4. Step 4: Simplify right side
   158,021.69x = 19,641,859,938.23
5. Step 5: Solve for x
   x = 19,641,859,938.23/158,021.69
6. Step 6: Final answer
   x = 124,298.51