Finding the Fourth Proportional to 198,566.34, 274,061.42 and 117,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   198,566.34 : 274,061.42 = 117,978.37 : x
2. Step 2: Convert to fraction form
   198,566.34/274,061.42 = 117,978.37/x
3. Step 3: Cross multiply
   198,566.34x = 274,061.42 × 117,978.37
4. Step 4: Simplify right side
   198,566.34x = 32,333,320,984.08
5. Step 5: Solve for x
   x = 32,333,320,984.08/198,566.34
6. Step 6: Final answer
   x = 162,833.85