Finding the Fourth Proportional to 86,870.69, 119,892.86 and 48,644.80

Step by Step Solution

1. Step 1: Write the proportion equation
   86,870.69 : 119,892.86 = 48,644.80 : x
2. Step 2: Convert to fraction form
   86,870.69/119,892.86 = 48,644.80/x
3. Step 3: Cross multiply
   86,870.69x = 119,892.86 × 48,644.80
4. Step 4: Simplify right side
   86,870.69x = 5,832,163,835.59
5. Step 5: Solve for x
   x = 5,832,163,835.59/86,870.69
6. Step 6: Final answer
   x = 67,136.15