Finding the Fourth Proportional to 72,991, 109,493.52 and 33,559.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,991 : 109,493.52 = 33,559.12 : x
2. Step 2: Convert to fraction form
   72,991/109,493.52 = 33,559.12/x
3. Step 3: Cross multiply
   72,991x = 109,493.52 × 33,559.12
4. Step 4: Simplify right side
   72,991x = 3,674,506,176.90
5. Step 5: Solve for x
   x = 3,674,506,176.90/72,991
6. Step 6: Final answer
   x = 50,341.91