Finding the Fourth Proportional to 92,086.32, 137,457.20 and 79,022.64

Step by Step Solution

1. Step 1: Write the proportion equation
   92,086.32 : 137,457.20 = 79,022.64 : x
2. Step 2: Convert to fraction form
   92,086.32/137,457.20 = 79,022.64/x
3. Step 3: Cross multiply
   92,086.32x = 137,457.20 × 79,022.64
4. Step 4: Simplify right side
   92,086.32x = 10,862,230,435.89
5. Step 5: Solve for x
   x = 10,862,230,435.89/92,086.32
6. Step 6: Final answer
   x = 117,957.05