Finding the Fourth Proportional to 127,642.72, 191,582.28 and 64,507.27

Step by Step Solution

1. Step 1: Write the proportion equation
   127,642.72 : 191,582.28 = 64,507.27 : x
2. Step 2: Convert to fraction form
   127,642.72/191,582.28 = 64,507.27/x
3. Step 3: Cross multiply
   127,642.72x = 191,582.28 × 64,507.27
4. Step 4: Simplify right side
   127,642.72x = 12,358,448,582.73
5. Step 5: Solve for x
   x = 12,358,448,582.73/127,642.72
6. Step 6: Final answer
   x = 96,820.63