Finding the Fourth Proportional to 127,279.60, 175,665 and 91,587.76

Step by Step Solution

1. Step 1: Write the proportion equation
   127,279.60 : 175,665 = 91,587.76 : x
2. Step 2: Convert to fraction form
   127,279.60/175,665 = 91,587.76/x
3. Step 3: Cross multiply
   127,279.60x = 175,665 × 91,587.76
4. Step 4: Simplify right side
   127,279.60x = 16,088,763,860.40
5. Step 5: Solve for x
   x = 16,088,763,860.40/127,279.60
6. Step 6: Final answer
   x = 126,404.89