Finding the Fourth Proportional to 199,058.83, 298,716.71 and 72,688.51

Step by Step Solution

1. Step 1: Write the proportion equation
   199,058.83 : 298,716.71 = 72,688.51 : x
2. Step 2: Convert to fraction form
   199,058.83/298,716.71 = 72,688.51/x
3. Step 3: Cross multiply
   199,058.83x = 298,716.71 × 72,688.51
4. Step 4: Simplify right side
   199,058.83x = 21,713,271,300.55
5. Step 5: Solve for x
   x = 21,713,271,300.55/199,058.83
6. Step 6: Final answer
   x = 109,079.67