Finding the Fourth Proportional to 149,900.88, 206,865 and 81,917.52

Step by Step Solution

1. Step 1: Write the proportion equation
   149,900.88 : 206,865 = 81,917.52 : x
2. Step 2: Convert to fraction form
   149,900.88/206,865 = 81,917.52/x
3. Step 3: Cross multiply
   149,900.88x = 206,865 × 81,917.52
4. Step 4: Simplify right side
   149,900.88x = 16,945,867,774.80
5. Step 5: Solve for x
   x = 16,945,867,774.80/149,900.88
6. Step 6: Final answer
   x = 113,047.15