Finding the Fourth Proportional to 196,420.86, 271,064.61 and 111,538.26

Step by Step Solution

1. Step 1: Write the proportion equation
   196,420.86 : 271,064.61 = 111,538.26 : x
2. Step 2: Convert to fraction form
   196,420.86/271,064.61 = 111,538.26/x
3. Step 3: Cross multiply
   196,420.86x = 271,064.61 × 111,538.26
4. Step 4: Simplify right side
   196,420.86x = 30,234,074,946.98
5. Step 5: Solve for x
   x = 30,234,074,946.98/196,420.86
6. Step 6: Final answer
   x = 153,924.97