Finding the Fourth Proportional to 127,146.72, 175,490.38 and 99,496.64

Step by Step Solution

1. Step 1: Write the proportion equation
   127,146.72 : 175,490.38 = 99,496.64 : x
2. Step 2: Convert to fraction form
   127,146.72/175,490.38 = 99,496.64/x
3. Step 3: Cross multiply
   127,146.72x = 175,490.38 × 99,496.64
4. Step 4: Simplify right side
   127,146.72x = 17,460,703,162.32
5. Step 5: Solve for x
   x = 17,460,703,162.32/127,146.72
6. Step 6: Final answer
   x = 137,327.20