Finding the Fourth Proportional to 56,969.78, 78,611.59 and 31,474.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,969.78 : 78,611.59 = 31,474.62 : x
2. Step 2: Convert to fraction form
   56,969.78/78,611.59 = 31,474.62/x
3. Step 3: Cross multiply
   56,969.78x = 78,611.59 × 31,474.62
4. Step 4: Simplify right side
   56,969.78x = 2,474,269,922.85
5. Step 5: Solve for x
   x = 2,474,269,922.85/56,969.78
6. Step 6: Final answer
   x = 43,431.27