Finding the Fourth Proportional to 111,142.98, 166,704.12 and 31,188.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,142.98 : 166,704.12 = 31,188.42 : x
2. Step 2: Convert to fraction form
   111,142.98/166,704.12 = 31,188.42/x
3. Step 3: Cross multiply
   111,142.98x = 166,704.12 × 31,188.42
4. Step 4: Simplify right side
   111,142.98x = 5,199,238,110.29
5. Step 5: Solve for x
   x = 5,199,238,110.29/111,142.98
6. Step 6: Final answer
   x = 46,779.73