Finding the Fourth Proportional to 116,784.72, 161,163.12 and 66,483.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,784.72 : 161,163.12 = 66,483.72 : x
2. Step 2: Convert to fraction form
   116,784.72/161,163.12 = 66,483.72/x
3. Step 3: Cross multiply
   116,784.72x = 161,163.12 × 66,483.72
4. Step 4: Simplify right side
   116,784.72x = 10,714,723,744.41
5. Step 5: Solve for x
   x = 10,714,723,744.41/116,784.72
6. Step 6: Final answer
   x = 91,747.65