Finding the Fourth Proportional to 73,312.31, 109,969.55 and 17,908.31

Step by Step Solution

1. Step 1: Write the proportion equation
   73,312.31 : 109,969.55 = 17,908.31 : x
2. Step 2: Convert to fraction form
   73,312.31/109,969.55 = 17,908.31/x
3. Step 3: Cross multiply
   73,312.31x = 109,969.55 × 17,908.31
4. Step 4: Simplify right side
   73,312.31x = 1,969,369,044.50
5. Step 5: Solve for x
   x = 1,969,369,044.50/73,312.31
6. Step 6: Final answer
   x = 26,862.73