Finding the Fourth Proportional to 54,312.88, 74,951.59 and 31,665.28

Step by Step Solution

1. Step 1: Write the proportion equation
   54,312.88 : 74,951.59 = 31,665.28 : x
2. Step 2: Convert to fraction form
   54,312.88/74,951.59 = 31,665.28/x
3. Step 3: Cross multiply
   54,312.88x = 74,951.59 × 31,665.28
4. Step 4: Simplify right side
   54,312.88x = 2,373,362,709.04
5. Step 5: Solve for x
   x = 2,373,362,709.04/54,312.88
6. Step 6: Final answer
   x = 43,697.98