Finding the Fourth Proportional to 259,077.28, 388,449.01 and 109,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,077.28 : 388,449.01 = 109,277.50 : x
2. Step 2: Convert to fraction form
   259,077.28/388,449.01 = 109,277.50/x
3. Step 3: Cross multiply
   259,077.28x = 388,449.01 × 109,277.50
4. Step 4: Simplify right side
   259,077.28x = 42,448,736,143.89
5. Step 5: Solve for x
   x = 42,448,736,143.89/259,077.28
6. Step 6: Final answer
   x = 163,845.85