Finding the Fourth Proportional to 271,638.89, 374,885.39 and 158,498.09

Step by Step Solution

1. Step 1: Write the proportion equation
   271,638.89 : 374,885.39 = 158,498.09 : x
2. Step 2: Convert to fraction form
   271,638.89/374,885.39 = 158,498.09/x
3. Step 3: Cross multiply
   271,638.89x = 374,885.39 × 158,498.09
4. Step 4: Simplify right side
   271,638.89x = 59,418,618,283.91
5. Step 5: Solve for x
   x = 59,418,618,283.91/271,638.89
6. Step 6: Final answer
   x = 218,741.21