Finding the Fourth Proportional to 149,384.03, 206,147.33 and 81,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,384.03 : 206,147.33 = 81,401.50 : x
2. Step 2: Convert to fraction form
   149,384.03/206,147.33 = 81,401.50/x
3. Step 3: Cross multiply
   149,384.03x = 206,147.33 × 81,401.50
4. Step 4: Simplify right side
   149,384.03x = 16,780,700,852.26
5. Step 5: Solve for x
   x = 16,780,700,852.26/149,384.03
6. Step 6: Final answer
   x = 112,332.63