Finding the Fourth Proportional to 72,941.37, 109,430.50 and 20,350.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,941.37 : 109,430.50 = 20,350.82 : x
2. Step 2: Convert to fraction form
   72,941.37/109,430.50 = 20,350.82/x
3. Step 3: Cross multiply
   72,941.37x = 109,430.50 × 20,350.82
4. Step 4: Simplify right side
   72,941.37x = 2,227,000,408.01
5. Step 5: Solve for x
   x = 2,227,000,408.01/72,941.37
6. Step 6: Final answer
   x = 30,531.38