Finding the Fourth Proportional to 116,674.58, 161,000.53 and 64,987.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,674.58 : 161,000.53 = 64,987.72 : x
2. Step 2: Convert to fraction form
   116,674.58/161,000.53 = 64,987.72/x
3. Step 3: Cross multiply
   116,674.58x = 161,000.53 × 64,987.72
4. Step 4: Simplify right side
   116,674.58x = 10,463,057,363.49
5. Step 5: Solve for x
   x = 10,463,057,363.49/116,674.58
6. Step 6: Final answer
   x = 89,677.27