Finding the Fourth Proportional to 215,300, 297,114 and 121,092

Step by Step Solution

1. Step 1: Write the proportion equation
   215,300 : 297,114 = 121,092 : x
2. Step 2: Convert to fraction form
   215,300/297,114 = 121,092/x
3. Step 3: Cross multiply
   215,300x = 297,114 × 121,092
4. Step 4: Simplify right side
   215,300x = 35,978,128,488
5. Step 5: Solve for x
   x = 35,978,128,488/215,300
6. Step 6: Final answer
   x = 167,106.96