Finding the Fourth Proportional to 128,664.69, 193,216.27 and 83,762.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128,664.69 : 193,216.27 = 83,762.52 : x
2. Step 2: Convert to fraction form
   128,664.69/193,216.27 = 83,762.52/x
3. Step 3: Cross multiply
   128,664.69x = 193,216.27 × 83,762.52
4. Step 4: Simplify right side
   128,664.69x = 16,184,281,680.20
5. Step 5: Solve for x
   x = 16,184,281,680.20/128,664.69
6. Step 6: Final answer
   x = 125,786.51