Finding the Fourth Proportional to 67,345.02, 92,931.91 and 37,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67,345.02 : 92,931.91 = 37,128.78 : x
2. Step 2: Convert to fraction form
   67,345.02/92,931.91 = 37,128.78/x
3. Step 3: Cross multiply
   67,345.02x = 92,931.91 × 37,128.78
4. Step 4: Simplify right side
   67,345.02x = 3,450,448,348.55
5. Step 5: Solve for x
   x = 3,450,448,348.55/67,345.02
6. Step 6: Final answer
   x = 51,235.39