Finding the Fourth Proportional to 92,671, 139,007.72 and 30,341.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,671 : 139,007.72 = 30,341.50 : x
2. Step 2: Convert to fraction form
   92,671/139,007.72 = 30,341.50/x
3. Step 3: Cross multiply
   92,671x = 139,007.72 × 30,341.50
4. Step 4: Simplify right side
   92,671x = 4,217,702,736.38
5. Step 5: Solve for x
   x = 4,217,702,736.38/92,671
6. Step 6: Final answer
   x = 45,512.65