Finding the Fourth Proportional to 151,364.75, 208,872.56 and 90,107.69

Step by Step Solution

1. Step 1: Write the proportion equation
   151,364.75 : 208,872.56 = 90,107.69 : x
2. Step 2: Convert to fraction form
   151,364.75/208,872.56 = 90,107.69/x
3. Step 3: Cross multiply
   151,364.75x = 208,872.56 × 90,107.69
4. Step 4: Simplify right side
   151,364.75x = 18,821,023,066.89
5. Step 5: Solve for x
   x = 18,821,023,066.89/151,364.75
6. Step 6: Final answer
   x = 124,342.18