Finding the Fourth Proportional to 151,513.75, 209,085.12 and 83,529.15

Step by Step Solution

1. Step 1: Write the proportion equation
   151,513.75 : 209,085.12 = 83,529.15 : x
2. Step 2: Convert to fraction form
   151,513.75/209,085.12 = 83,529.15/x
3. Step 3: Cross multiply
   151,513.75x = 209,085.12 × 83,529.15
4. Step 4: Simplify right side
   151,513.75x = 17,464,702,351.25
5. Step 5: Solve for x
   x = 17,464,702,351.25/151,513.75
6. Step 6: Final answer
   x = 115,268.10