Finding the Fourth Proportional to 103,660.29, 155,284.72 and 79,885.32

Step by Step Solution

1. Step 1: Write the proportion equation
   103,660.29 : 155,284.72 = 79,885.32 : x
2. Step 2: Convert to fraction form
   103,660.29/155,284.72 = 79,885.32/x
3. Step 3: Cross multiply
   103,660.29x = 155,284.72 × 79,885.32
4. Step 4: Simplify right side
   103,660.29x = 12,404,969,548.31
5. Step 5: Solve for x
   x = 12,404,969,548.31/103,660.29
6. Step 6: Final answer
   x = 119,669.45