Finding the Fourth Proportional to 52,642.89, 72,637.16 and 31,424.13

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.89 : 72,637.16 = 31,424.13 : x
2. Step 2: Convert to fraction form
   52,642.89/72,637.16 = 31,424.13/x
3. Step 3: Cross multiply
   52,642.89x = 72,637.16 × 31,424.13
4. Step 4: Simplify right side
   52,642.89x = 2,282,559,401.55
5. Step 5: Solve for x
   x = 2,282,559,401.55/52,642.89
6. Step 6: Final answer
   x = 43,359.31