Finding the Fourth Proportional to 201,784.88, 278,460.60 and 111,139.04

Step by Step Solution

1. Step 1: Write the proportion equation
   201,784.88 : 278,460.60 = 111,139.04 : x
2. Step 2: Convert to fraction form
   201,784.88/278,460.60 = 111,139.04/x
3. Step 3: Cross multiply
   201,784.88x = 278,460.60 × 111,139.04
4. Step 4: Simplify right side
   201,784.88x = 30,947,843,761.82
5. Step 5: Solve for x
   x = 30,947,843,761.82/201,784.88
6. Step 6: Final answer
   x = 153,370.48