Finding the Fourth Proportional to 109,837.34, 164,756.88 and 71,918.57

Step by Step Solution

1. Step 1: Write the proportion equation
   109,837.34 : 164,756.88 = 71,918.57 : x
2. Step 2: Convert to fraction form
   109,837.34/164,756.88 = 71,918.57/x
3. Step 3: Cross multiply
   109,837.34x = 164,756.88 × 71,918.57
4. Step 4: Simplify right side
   109,837.34x = 11,849,078,023.88
5. Step 5: Solve for x
   x = 11,849,078,023.88/109,837.34
6. Step 6: Final answer
   x = 107,878.42