Finding the Fourth Proportional to 81,243.32, 121,830.12 and 27,940.67

Step by Step Solution

1. Step 1: Write the proportion equation
   81,243.32 : 121,830.12 = 27,940.67 : x
2. Step 2: Convert to fraction form
   81,243.32/121,830.12 = 27,940.67/x
3. Step 3: Cross multiply
   81,243.32x = 121,830.12 × 27,940.67
4. Step 4: Simplify right side
   81,243.32x = 3,404,014,569.83
5. Step 5: Solve for x
   x = 3,404,014,569.83/81,243.32
6. Step 6: Final answer
   x = 41,899.01