Finding the Fourth Proportional to 72,813.47, 109,262.67 and 30,690.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,813.47 : 109,262.67 = 30,690.98 : x
2. Step 2: Convert to fraction form
   72,813.47/109,262.67 = 30,690.98/x
3. Step 3: Cross multiply
   72,813.47x = 109,262.67 × 30,690.98
4. Step 4: Simplify right side
   72,813.47x = 3,353,378,419.72
5. Step 5: Solve for x
   x = 3,353,378,419.72/72,813.47
6. Step 6: Final answer
   x = 46,054.37