Finding the Fourth Proportional to 91,451.69, 137,143.43 and 31,463.39

Step by Step Solution

1. Step 1: Write the proportion equation
   91,451.69 : 137,143.43 = 31,463.39 : x
2. Step 2: Convert to fraction form
   91,451.69/137,143.43 = 31,463.39/x
3. Step 3: Cross multiply
   91,451.69x = 137,143.43 × 31,463.39
4. Step 4: Simplify right side
   91,451.69x = 4,314,997,224.03
5. Step 5: Solve for x
   x = 4,314,997,224.03/91,451.69
6. Step 6: Final answer
   x = 47,183.35