Finding the Fourth Proportional to 57,136.56, 78,848.67 and 31,642.37

Step by Step Solution

1. Step 1: Write the proportion equation
   57,136.56 : 78,848.67 = 31,642.37 : x
2. Step 2: Convert to fraction form
   57,136.56/78,848.67 = 31,642.37/x
3. Step 3: Cross multiply
   57,136.56x = 78,848.67 × 31,642.37
4. Step 4: Simplify right side
   57,136.56x = 2,494,958,790.15
5. Step 5: Solve for x
   x = 2,494,958,790.15/57,136.56
6. Step 6: Final answer
   x = 43,666.59