Finding the Fourth Proportional to 111,911.42, 167,704.47 and 71,804.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,911.42 : 167,704.47 = 71,804.57 : x
2. Step 2: Convert to fraction form
   111,911.42/167,704.47 = 71,804.57/x
3. Step 3: Cross multiply
   111,911.42x = 167,704.47 × 71,804.57
4. Step 4: Simplify right side
   111,911.42x = 12,041,946,996.41
5. Step 5: Solve for x
   x = 12,041,946,996.41/111,911.42
6. Step 6: Final answer
   x = 107,602.49