Finding the Fourth Proportional to 83,680.72, 115,450.87 and 53,483.47

Step by Step Solution

1. Step 1: Write the proportion equation
   83,680.72 : 115,450.87 = 53,483.47 : x
2. Step 2: Convert to fraction form
   83,680.72/115,450.87 = 53,483.47/x
3. Step 3: Cross multiply
   83,680.72x = 115,450.87 × 53,483.47
4. Step 4: Simplify right side
   83,680.72x = 6,174,713,142.12
5. Step 5: Solve for x
   x = 6,174,713,142.12/83,680.72
6. Step 6: Final answer
   x = 73,788.96