Finding the Fourth Proportional to 62,987, 86,914.50 and 36,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   62,987 : 86,914.50 = 36,128.12 : x
2. Step 2: Convert to fraction form
   62,987/86,914.50 = 36,128.12/x
3. Step 3: Cross multiply
   62,987x = 86,914.50 × 36,128.12
4. Step 4: Simplify right side
   62,987x = 3,140,057,485.74
5. Step 5: Solve for x
   x = 3,140,057,485.74/62,987
6. Step 6: Final answer
   x = 49,852.47