Finding the Fourth Proportional to 86,500.56, 129,681.72 and 37,287.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,500.56 : 129,681.72 = 37,287.12 : x
2. Step 2: Convert to fraction form
   86,500.56/129,681.72 = 37,287.12/x
3. Step 3: Cross multiply
   86,500.56x = 129,681.72 × 37,287.12
4. Step 4: Simplify right side
   86,500.56x = 4,835,457,855.45
5. Step 5: Solve for x
   x = 4,835,457,855.45/86,500.56
6. Step 6: Final answer
   x = 55,900.88