Finding the Fourth Proportional to 130,111.83, 179,485.07 and 79,140.15

Step by Step Solution

1. Step 1: Write the proportion equation
   130,111.83 : 179,485.07 = 79,140.15 : x
2. Step 2: Convert to fraction form
   130,111.83/179,485.07 = 79,140.15/x
3. Step 3: Cross multiply
   130,111.83x = 179,485.07 × 79,140.15
4. Step 4: Simplify right side
   130,111.83x = 14,204,474,966.86
5. Step 5: Solve for x
   x = 14,204,474,966.86/130,111.83
6. Step 6: Final answer
   x = 109,171.28