Finding the Fourth Proportional to 72,686.13, 109,071.50 and 30,563.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,686.13 : 109,071.50 = 30,563.16 : x
2. Step 2: Convert to fraction form
   72,686.13/109,071.50 = 30,563.16/x
3. Step 3: Cross multiply
   72,686.13x = 109,071.50 × 30,563.16
4. Step 4: Simplify right side
   72,686.13x = 3,333,569,553.12
5. Step 5: Solve for x
   x = 3,333,569,553.12/72,686.13
6. Step 6: Final answer
   x = 45,862.53