Finding the Fourth Proportional to 70,615.72, 105,926.82 and 31,173.04

Step by Step Solution

1. Step 1: Write the proportion equation
   70,615.72 : 105,926.82 = 31,173.04 : x
2. Step 2: Convert to fraction form
   70,615.72/105,926.82 = 31,173.04/x
3. Step 3: Cross multiply
   70,615.72x = 105,926.82 × 31,173.04
4. Step 4: Simplify right side
   70,615.72x = 3,302,060,996.93
5. Step 5: Solve for x
   x = 3,302,060,996.93/70,615.72
6. Step 6: Final answer
   x = 46,760.99