Finding the Fourth Proportional to 45,611.76, 62,912.55 and 31,272.89

Step by Step Solution

1. Step 1: Write the proportion equation
   45,611.76 : 62,912.55 = 31,272.89 : x
2. Step 2: Convert to fraction form
   45,611.76/62,912.55 = 31,272.89/x
3. Step 3: Cross multiply
   45,611.76x = 62,912.55 × 31,272.89
4. Step 4: Simplify right side
   45,611.76x = 1,967,456,941.21
5. Step 5: Solve for x
   x = 1,967,456,941.21/45,611.76
6. Step 6: Final answer
   x = 43,134.86