Finding the Fourth Proportional to 91,354.96, 137,076.72 and 79,531.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,354.96 : 137,076.72 = 79,531.12 : x
2. Step 2: Convert to fraction form
   91,354.96/137,076.72 = 79,531.12/x
3. Step 3: Cross multiply
   91,354.96x = 137,076.72 × 79,531.12
4. Step 4: Simplify right side
   91,354.96x = 10,901,865,067.53
5. Step 5: Solve for x
   x = 10,901,865,067.53/91,354.96
6. Step 6: Final answer
   x = 119,335.23