Finding the Fourth Proportional to 127,540.72, 176,036.52 and 77,230

Step by Step Solution

1. Step 1: Write the proportion equation
   127,540.72 : 176,036.52 = 77,230 : x
2. Step 2: Convert to fraction form
   127,540.72/176,036.52 = 77,230/x
3. Step 3: Cross multiply
   127,540.72x = 176,036.52 × 77,230
4. Step 4: Simplify right side
   127,540.72x = 13,595,300,439.60
5. Step 5: Solve for x
   x = 13,595,300,439.60/127,540.72
6. Step 6: Final answer
   x = 106,595.76