Finding the Fourth Proportional to 201,812.26, 278,533.72 and 116,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   201,812.26 : 278,533.72 = 116,978.52 : x
2. Step 2: Convert to fraction form
   201,812.26/278,533.72 = 116,978.52/x
3. Step 3: Cross multiply
   201,812.26x = 278,533.72 × 116,978.52
4. Step 4: Simplify right side
   201,812.26x = 32,582,462,335.69
5. Step 5: Solve for x
   x = 32,582,462,335.69/201,812.26
6. Step 6: Final answer
   x = 161,449.37