Finding the Fourth Proportional to 91,776.89, 137,765.91 and 72,922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,776.89 : 137,765.91 = 72,922.72 : x
2. Step 2: Convert to fraction form
   91,776.89/137,765.91 = 72,922.72/x
3. Step 3: Cross multiply
   91,776.89x = 137,765.91 × 72,922.72
4. Step 4: Simplify right side
   91,776.89x = 10,046,265,284.43
5. Step 5: Solve for x
   x = 10,046,265,284.43/91,776.89
6. Step 6: Final answer
   x = 109,464.00