Finding the Fourth Proportional to 151,515.48, 209,081.88 and 83,528.88

Step by Step Solution

1. Step 1: Write the proportion equation
   151,515.48 : 209,081.88 = 83,528.88 : x
2. Step 2: Convert to fraction form
   151,515.48/209,081.88 = 83,528.88/x
3. Step 3: Cross multiply
   151,515.48x = 209,081.88 × 83,528.88
4. Step 4: Simplify right side
   151,515.48x = 17,464,375,264.69
5. Step 5: Solve for x
   x = 17,464,375,264.69/151,515.48
6. Step 6: Final answer
   x = 115,264.63