Finding the Fourth Proportional to 127,128.51, 175,471.38 and 79,353.09

Step by Step Solution

1. Step 1: Write the proportion equation
   127,128.51 : 175,471.38 = 79,353.09 : x
2. Step 2: Convert to fraction form
   127,128.51/175,471.38 = 79,353.09/x
3. Step 3: Cross multiply
   127,128.51x = 175,471.38 × 79,353.09
4. Step 4: Simplify right side
   127,128.51x = 13,924,196,209.56
5. Step 5: Solve for x
   x = 13,924,196,209.56/127,128.51
6. Step 6: Final answer
   x = 109,528.51