Finding the Fourth Proportional to 154,820.70, 213,672.33 and 91,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   154,820.70 : 213,672.33 = 91,164.42 : x
2. Step 2: Convert to fraction form
   154,820.70/213,672.33 = 91,164.42/x
3. Step 3: Cross multiply
   154,820.70x = 213,672.33 × 91,164.42
4. Step 4: Simplify right side
   154,820.70x = 19,479,314,034.50
5. Step 5: Solve for x
   x = 19,479,314,034.50/154,820.70
6. Step 6: Final answer
   x = 125,818.54