Finding the Fourth Proportional to 91,492.89, 137,205.20 and 31,504.43

Step by Step Solution

1. Step 1: Write the proportion equation
   91,492.89 : 137,205.20 = 31,504.43 : x
2. Step 2: Convert to fraction form
   91,492.89/137,205.20 = 31,504.43/x
3. Step 3: Cross multiply
   91,492.89x = 137,205.20 × 31,504.43
4. Step 4: Simplify right side
   91,492.89x = 4,322,570,775.49
5. Step 5: Solve for x
   x = 4,322,570,775.49/91,492.89
6. Step 6: Final answer
   x = 47,244.88