Finding the Fourth Proportional to 67,691.28, 93,414.12 and 37,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,691.28 : 93,414.12 = 37,478.72 : x
2. Step 2: Convert to fraction form
   67,691.28/93,414.12 = 37,478.72/x
3. Step 3: Cross multiply
   67,691.28x = 93,414.12 × 37,478.72
4. Step 4: Simplify right side
   67,691.28x = 3,501,041,647.53
5. Step 5: Solve for x
   x = 3,501,041,647.53/67,691.28
6. Step 6: Final answer
   x = 51,720.72