Finding the Fourth Proportional to 73,111.10, 109,709.70 and 30,988.12

Step by Step Solution

1. Step 1: Write the proportion equation
   73,111.10 : 109,709.70 = 30,988.12 : x
2. Step 2: Convert to fraction form
   73,111.10/109,709.70 = 30,988.12/x
3. Step 3: Cross multiply
   73,111.10x = 109,709.70 × 30,988.12
4. Step 4: Simplify right side
   73,111.10x = 3,399,697,348.76
5. Step 5: Solve for x
   x = 3,399,697,348.76/73,111.10
6. Step 6: Final answer
   x = 46,500.43