Finding the Fourth Proportional to 111,485.30, 167,218.91 and 31,520.07

Step by Step Solution

1. Step 1: Write the proportion equation
   111,485.30 : 167,218.91 = 31,520.07 : x
2. Step 2: Convert to fraction form
   111,485.30/167,218.91 = 31,520.07/x
3. Step 3: Cross multiply
   111,485.30x = 167,218.91 × 31,520.07
4. Step 4: Simplify right side
   111,485.30x = 5,270,751,748.52
5. Step 5: Solve for x
   x = 5,270,751,748.52/111,485.30
6. Step 6: Final answer
   x = 47,277.55