Finding the Fourth Proportional to 31,707.13, 47,607.27 and 31,147.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,707.13 : 47,607.27 = 31,147.15 : x
2. Step 2: Convert to fraction form
   31,707.13/47,607.27 = 31,147.15/x
3. Step 3: Cross multiply
   31,707.13x = 47,607.27 × 31,147.15
4. Step 4: Simplify right side
   31,707.13x = 1,482,830,779.78
5. Step 5: Solve for x
   x = 1,482,830,779.78/31,707.13
6. Step 6: Final answer
   x = 46,766.48