Finding the Fourth Proportional to 152,800.28, 210,839.72 and 88,259.25

Step by Step Solution

1. Step 1: Write the proportion equation
   152,800.28 : 210,839.72 = 88,259.25 : x
2. Step 2: Convert to fraction form
   152,800.28/210,839.72 = 88,259.25/x
3. Step 3: Cross multiply
   152,800.28x = 210,839.72 × 88,259.25
4. Step 4: Simplify right side
   152,800.28x = 18,608,555,116.11
5. Step 5: Solve for x
   x = 18,608,555,116.11/152,800.28
6. Step 6: Final answer
   x = 121,783.52