Finding the Fourth Proportional to 196,726.59, 271,503.71 and 120,290.48

Step by Step Solution

1. Step 1: Write the proportion equation
   196,726.59 : 271,503.71 = 120,290.48 : x
2. Step 2: Convert to fraction form
   196,726.59/271,503.71 = 120,290.48/x
3. Step 3: Cross multiply
   196,726.59x = 271,503.71 × 120,290.48
4. Step 4: Simplify right side
   196,726.59x = 32,659,312,068.10
5. Step 5: Solve for x
   x = 32,659,312,068.10/196,726.59
6. Step 6: Final answer
   x = 166,013.72