Finding the Fourth Proportional to 57,099.67, 78,795.52 and 31,606.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,099.67 : 78,795.52 = 31,606.09 : x
2. Step 2: Convert to fraction form
   57,099.67/78,795.52 = 31,606.09/x
3. Step 3: Cross multiply
   57,099.67x = 78,795.52 × 31,606.09
4. Step 4: Simplify right side
   57,099.67x = 2,490,418,020.71
5. Step 5: Solve for x
   x = 2,490,418,020.71/57,099.67
6. Step 6: Final answer
   x = 43,615.28