Finding the Fourth Proportional to 154,882, 213,704.20 and 91,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   154,882 : 213,704.20 = 91,196.56 : x
2. Step 2: Convert to fraction form
   154,882/213,704.20 = 91,196.56/x
3. Step 3: Cross multiply
   154,882x = 213,704.20 × 91,196.56
4. Step 4: Simplify right side
   154,882x = 19,489,087,897.55
5. Step 5: Solve for x
   x = 19,489,087,897.55/154,882
6. Step 6: Final answer
   x = 125,831.85