Finding the Fourth Proportional to 86,403, 119,276.16 and 60,930.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,403 : 119,276.16 = 60,930.12 : x
2. Step 2: Convert to fraction form
   86,403/119,276.16 = 60,930.12/x
3. Step 3: Cross multiply
   86,403x = 119,276.16 × 60,930.12
4. Step 4: Simplify right side
   86,403x = 7,267,510,741.94
5. Step 5: Solve for x
   x = 7,267,510,741.94/86,403
6. Step 6: Final answer
   x = 84,111.79