Finding the Fourth Proportional to 118,911.56, 164,099.28 and 67,931

Step by Step Solution

1. Step 1: Write the proportion equation
   118,911.56 : 164,099.28 = 67,931 : x
2. Step 2: Convert to fraction form
   118,911.56/164,099.28 = 67,931/x
3. Step 3: Cross multiply
   118,911.56x = 164,099.28 × 67,931
4. Step 4: Simplify right side
   118,911.56x = 11,147,428,189.68
5. Step 5: Solve for x
   x = 11,147,428,189.68/118,911.56
6. Step 6: Final answer
   x = 93,745.54