Finding the Fourth Proportional to 127,796.50, 176,389.20 and 79,434.91

Step by Step Solution

1. Step 1: Write the proportion equation
   127,796.50 : 176,389.20 = 79,434.91 : x
2. Step 2: Convert to fraction form
   127,796.50/176,389.20 = 79,434.91/x
3. Step 3: Cross multiply
   127,796.50x = 176,389.20 × 79,434.91
4. Step 4: Simplify right side
   127,796.50x = 14,011,458,947.85
5. Step 5: Solve for x
   x = 14,011,458,947.85/127,796.50
6. Step 6: Final answer
   x = 109,638.84