Finding the Fourth Proportional to 218,612.52, 327,964.86 and 70,857

Step by Step Solution

1. Step 1: Write the proportion equation
   218,612.52 : 327,964.86 = 70,857 : x
2. Step 2: Convert to fraction form
   218,612.52/327,964.86 = 70,857/x
3. Step 3: Cross multiply
   218,612.52x = 327,964.86 × 70,857
4. Step 4: Simplify right side
   218,612.52x = 23,238,606,085.02
5. Step 5: Solve for x
   x = 23,238,606,085.02/218,612.52
6. Step 6: Final answer
   x = 106,300.44