Finding the Fourth Proportional to 149,031.76, 205,667.72 and 81,965.52

Step by Step Solution

1. Step 1: Write the proportion equation
   149,031.76 : 205,667.72 = 81,965.52 : x
2. Step 2: Convert to fraction form
   149,031.76/205,667.72 = 81,965.52/x
3. Step 3: Cross multiply
   149,031.76x = 205,667.72 × 81,965.52
4. Step 4: Simplify right side
   149,031.76x = 16,857,661,617.01
5. Step 5: Solve for x
   x = 16,857,661,617.01/149,031.76
6. Step 6: Final answer
   x = 113,114.56