Finding the Fourth Proportional to 111,322,072.64, 166,988,357.76 and 91,855,191.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,322,072.64 : 166,988,357.76 = 91,855,191.98 : x
2. Step 2: Convert to fraction form
   111,322,072.64/166,988,357.76 = 91,855,191.98/x
3. Step 3: Cross multiply
   111,322,072.64x = 166,988,357.76 × 91,855,191.98
4. Step 4: Simplify right side
   111,322,072.64x = 15,338,747,660,469,722
5. Step 5: Solve for x
   x = 15,338,747,660,469,722/111,322,072.64
6. Step 6: Final answer
   x = 137,787,118.91