Finding the Fourth Proportional to 86,485.98, 129,681.89 and 39,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,485.98 : 129,681.89 = 39,045.50 : x
2. Step 2: Convert to fraction form
   86,485.98/129,681.89 = 39,045.50/x
3. Step 3: Cross multiply
   86,485.98x = 129,681.89 × 39,045.50
4. Step 4: Simplify right side
   86,485.98x = 5,063,494,236.00
5. Step 5: Solve for x
   x = 5,063,494,236.00/86,485.98
6. Step 6: Final answer
   x = 58,546.99