Finding the Fourth Proportional to 108,081.32, 149,107.26 and 71,800.20

Step by Step Solution

1. Step 1: Write the proportion equation
   108,081.32 : 149,107.26 = 71,800.20 : x
2. Step 2: Convert to fraction form
   108,081.32/149,107.26 = 71,800.20/x
3. Step 3: Cross multiply
   108,081.32x = 149,107.26 × 71,800.20
4. Step 4: Simplify right side
   108,081.32x = 10,705,931,089.45
5. Step 5: Solve for x
   x = 10,705,931,089.45/108,081.32
6. Step 6: Final answer
   x = 99,054.41