Finding the Fourth Proportional to 116,404.50, 160,638.21 and 63,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,404.50 : 160,638.21 = 63,412.50 : x
2. Step 2: Convert to fraction form
   116,404.50/160,638.21 = 63,412.50/x
3. Step 3: Cross multiply
   116,404.50x = 160,638.21 × 63,412.50
4. Step 4: Simplify right side
   116,404.50x = 10,186,470,491.63
5. Step 5: Solve for x
   x = 10,186,470,491.63/116,404.50
6. Step 6: Final answer
   x = 87,509.25